Retro's Competition History

Date Contest Rank Performance New Rating Diff
AtCoder Grand Contest 001 686 1279 179 -
AtCoder Beginner Contest 042 338 530 242 +63
天下一プログラマーコンテスト2016予選A 251 - - -
DISCO presents ディスカバリーチャンネル コードコンテスト2016 予選 434 - - -
AtCoder Beginner Contest 047 114 1203 502 +260
AtCoder Beginner Contest 048 227 669 523 +21
AtCoder Beginner Contest 049 181 772 562 +39
AtCoder Beginner Contest 055 328 493 543 -19
Mujin Programming Challenge 2017 422 1000 622 +79
AtCoder Beginner Contest 058 299 676 626 +4
AtCoder Beginner Contest 062 403 485 604 -22
AtCoder Beginner Contest 063 216 1004 664 +60
Tenka1 Programmer Beginner Contest 331 772 677 +13
AtCoder Beginner Contest 098 1231 96 597 -80
codeFlyer (bitFlyer Programming Contest) 1115 - - -
AtCoder Beginner Contest 112 1559 587 595 -2
CODE FESTIVAL 2018 qual B 790 - - -
Tenka1 Programmer Beginner Contest 931 575 592 -3
AtCoder Beginner Contest 115 1705 207 546 -46
AISing Programming Contest 2019 1552 561 547 +1
Yahoo Programming Contest 2019 2387 334 524 -23
AtCoder Beginner Contest 118 2661 103 466 -58
AtCoder Beginner Contest 127 4616 166 426 -40
Panasonic Programming Contest 2020 3551 651 453 +27
AtCoder Beginner Contest 161 5173 607 470 +17
AtCoder Beginner Contest 163 7706 - - -
AtCoder Beginner Contest 164 6204 549 479 +9
AtCoder Beginner Contest 165 3256 993 546 +67
AtCoder Beginner Contest 166 2505 1115 621 +75
AtCoder Beginner Contest 167 4553 796 641 +20
AtCoder Beginner Contest 168 8279 188 595 -46
NOMURA Programming Competition 2020 4198 457 581 -14
AtCoder Beginner Contest 169 5901 581 581 ±0
AtCoder Grand Contest 045 458 - - -
Tokio Marine & Nichido Fire Insurance Programming Contest 2020 2484 954 626 +45
AtCoder Beginner Contest 170 3258 937 662 +36
AtCoder Beginner Contest 171 2646 1068 711 +49
AtCoder Beginner Contest 172 2364 1110 759 +48
AtCoder Beginner Contest 173 2718 1065 794 +35
AIsing Programming Contest 2020 2753 941 810 +16
M-SOLUTIONS Programming Contest 2020 3734 607 791 -19
AtCoder Beginner Contest 174 4275 757 787 -4
AtCoder Beginner Contest 175 5777 396 753 -34
AtCoder Beginner Contest 176 4129 751 753 ±0
AtCoder Beginner Contest 177 6617 308 714 -39
AtCoder Beginner Contest 178 5039 622 705 -9
AtCoder Beginner Contest 179 4981 541 690 -15
AtCoder Regular Contest 104 3840 449 667 -23
HHKB Programming Contest 2020 3375 628 664 -3
AtCoder Regular Contest 106 3233 397 639 -25
AtCoder Regular Contest 107 2919 443 621 -18
AtCoder Beginner Contest 181 2957 721 631 +10
AtCoder Beginner Contest 182 2464 958 669 +38
AtCoder Beginner Contest 183 3362 703 672 +3
AtCoder Regular Contest 108 3658 64 603 -69
AtCoder Beginner Contest 184 3919 650 608 +5
AtCoder Regular Contest 109 3550 178 564 -44
AtCoder Beginner Contest 185 3717 673 576 +12
Panasonic Programming Contest (AtCoder Beginner Contest 186) 4210 372 557 -19
AtCoder Beginner Contest 187 2994 827 587 +30
AtCoder Beginner Contest 188 3561 732 602 +15
AtCoder Beginner Contest 189 5857 367 581 -21
AtCoder Beginner Contest 190 4588 643 587 +6
AtCoder Beginner Contest 191 1258 1407 701 +114
AtCoder Beginner Contest 192 4578 612 692 -9
Caddi Programming Contest 2021(AtCoder Beginner Contest 193) 3374 754 699 +7
AtCoder Beginner Contest 194 3093 815 711 +12
Panasonic Programming Contest (AtCoder Beginner Contest 195) 3443 699 710 -1
AtCoder Beginner Contest 197(Sponsored by Panasonic) 2977 813 720 +10
AtCoder Beginner Contest 199(Sponsored by Panasonic) 1904 1155 772 +52
ZONe Energy Programming Contest 6172 96 706 -66
KYOCERA Programming Contest 2021(AtCoder Beginner Contest 200) 908 1560 826 +120
Mynavi Programming Contest 2021(AtCoder Beginner Contest 201) 2201 1060 852 +26
AISing Programming Contest 2021(AtCoder Beginner Contest 202) 2726 926 859 +7
AtCoder Beginner Contest 203(Sponsored by Panasonic) 2943 848 858 -1
AtCoder Beginner Contest 204 3031 867 859 +1
AtCoder Beginner Contest 205 5474 340 816 -43
AtCoder Beginner Contest 206(Sponsored by Panasonic) 2985 879 823 +7
AtCoder Beginner Contest 207 1797 1145 859 +36
AtCoder Beginner Contest 208 4082 614 837 -22
AtCoder Beginner Contest 209 6159 225 785 -52
AtCoder Beginner Contest 210 4090 640 771 -14
AtCoder Beginner Contest 211 2724 920 787 +16
AtCoder Beginner Contest 212 3997 548 765 -22
AtCoder Beginner Contest 213 3970 633 753 -12
AtCoder Beginner Contest 214 1547 1249 813 +60
AtCoder Beginner Contest 215 2763 919 824 +11
AtCoder Beginner Contest 216 2827 809 823 -1
AtCoder Beginner Contest 217 3427 786 819 -4
AtCoder Beginner Contest 218 4771 522 793 -26
Sciseed Programming Contest 2021(AtCoder Beginner Contest 219) 2299 960 810 +17
AtCoder Beginner Contest 220 2377 965 827 +17
AtCoder Beginner Contest 221 1398 1308 885 +58
Exawizards Programming Contest 2021(AtCoder Beginner Contest 222) 2238 987 896 +11
AtCoder Beginner Contest 223 3840 436 857 -39
AtCoder Beginner Contest 224 2803 732 845 -12
UNICORN Programming Contest 2021(AtCoder Beginner Contest 225) 2548 833 844 -1
AtCoder Beginner Contest 226 2040 1012 862 +18
KEYENCE Programming Contest 2021 (AtCoder Beginner Contest 227) 2461 784 854 -8
TOYOTA SYSTEMS Programming Contest 2021(AtCoder Beginner Contest 228) 2455 855 854 ±0
NEC Programming Contest 2021(AtCoder Beginner Contest 229) 2454 845 854 ±0
AtCoder Beginner Contest 230 3659 431 818 -36
Panasonic Programming Contest 2021(AtCoder Beginner Contest 231) 1651 1076 846 +28
M-SOLUTIONS Programming Contest 2021(AtCoder Beginner Contest 232) 2250 855 847 +1
AtCoder Beginner Contest 234 2962 840 846 -1
HHKB Programming Contest 2022(AtCoder Beginner Contest 235) 3277 777 840 -6
AtCoder Beginner Contest 236 2533 993 856 +16
AtCoder Beginner Contest 237 3229 771 848 -8
Monoxer Programming Contest 2022(AtCoder Beginner Contest 238) 3289 784 841 -7
Denso Create Programming Contest 2022(AtCoder Beginner Contest 239) 3395 719 830 -11
AtCoder Beginner Contest 240 2368 962 844 +14
AtCoder Beginner Contest 241(Sponsored by Panasonic) 4137 669 827 -17
AtCoder Beginner Contest 242 3831 735 818 -9
AtCoder Beginner Contest 243 2893 890 826 +8
AtCoder Beginner Contest 245 3861 685 812 -14
AtCoder Beginner Contest 246 4903 459 782 -30
AtCoder Beginner Contest 247 3564 708 774 -8
UNIQUE VISION Programming Contest 2022(AtCoder Beginner Contest 248) 2979 828 780 +6
Monoxer Programming Contest 2022(AtCoder Beginner Contest 249) 1848 1090 815 +35
Panasonic Programming Contest 2022(AtCoder Beginner Contest 251) 1873 1082 845 +30
AtCoder Beginner Contest 252 3266 823 842 -3
AtCoder Beginner Contest 254 3924 697 829 -13
Aising Programming Contest 2022(AtCoder Beginner Contest 255) 3552 729 819 -10
Tokio Marine & Nichido Fire Insurance Programming Contest 2022(AtCoder Beginner Contest 256) 2104 1048 844 +25
NS Solutions Corporation Programming Contest 2022(AtCoder Beginner Contest 257) 3392 720 832 -12
AtCoder Beginner Contest 258 2022 1147 868 +36
AtCoder Beginner Contest 259 2397 1018 884 +16
AtCoder Beginner Contest 261 2209 1064 903 +19
AtCoder Beginner Contest 262 1967 1073 921 +18
LINE Verda Programming Contest(AtCoder Beginner Contest 263) 1655 1199 952 +31
freee Programming Contest 2022(AtCoder Beginner Contest 264) 4408 499 914 -38
AtCoder Beginner Contest 265 1717 1153 940 +26
NEC Programming Contest 2022 (AtCoder Beginner Contest 267) 2792 924 939 -1
UNIQUE VISION Programming Contest 2022 Summer (AtCoder Beginner Contest 268) 2759 850 930 -9
UNICORN Programming Contest 2022(AtCoder Beginner Contest 269) 2513 907 928 -2
KYOCERA Programming Contest 2022(AtCoder Beginner Contest 271) 3890 632 902 -26
AtCoder Beginner Contest 272 3134 773 889 -13
Panasonic Programming Contest 2022(AtCoder Beginner Contest 273) 3048 743 875 -14
キーエンスプログラミングコンテスト2022(AtCoder Beginner Contest 274) 3087 761 865 -10
AtCoder Beginner Contest 276 2222 1001 879 +14
Daiwa Securities Co. Ltd. Programming Contest 2022 Autumn (AtCoder Beginner Contest 277) 1692 1175 912 +33
AtCoder Beginner Contest 278 1704 1158 939 +27
TOYOTA SYSTEMS Programming Contest 2022(AtCoder Beginner Contest 279) 2476 868 932 -7
Denso Create Programming Contest 2022 Winter(AtCoder Beginner Contest 280) 2889 844 924 -8
AtCoder Beginner Contest 281 3800 671 901 -23
HHKB Programming Contest 2022 Winter(AtCoder Beginner Contest 282) 1565 1199 934 +33
AtCoder Beginner Contest 284 2768 963 937 +3
AtCoder Beginner Contest 285 1287 1199 966 +29
UL Systems Programming Contest 2023(AtCoder Beginner Contest 286) 2204 956 965 -1
Toyota Programming Contest 2023 Spring Qual A(AtCoder Beginner Contest 288) 2892 877 957 -8
Sky Inc, Programming Contest 2023(AtCoder Beginner Contest 289) 1741 1204 984 +27
Toyota Programming Contest 2023 Spring Qual B(AtCoder Beginner Contest 290) 3505 586 950 -34
AtCoder Beginner Contest 292 3026 819 937 -13
AtCoder Beginner Contest 293 2592 971 941 +4
AtCoder Beginner Contest 295 3574 746 923 -18
AtCoder Beginner Contest 296 2835 877 918 -5
AtCoder Beginner Contest 297 3217 693 898 -20
Tokio Marine & Nichido Fire Insurance Programming Contest 2023(AtCoder Beginner Contest 299) 3675 - - -
Panasonic Programming Contest 2023(AtCoder Beginner Contest 301) 4642 539 866 -32
TOYOTA MOTOR CORPORATION Programming Contest 2023#2 (AtCoder Beginner Contest 302) 1977 1076 889 +23
NS Solutions Corporation Programming Contest 2023(AtCoder Beginner Contest 303) 3567 732 874 -15
Tokio Marine & Nichido Fire Insurance Programming Contest 2023(AtCoder Beginner Contest 304) 1861 - - -
KYOCERA Programming Contest 2023(AtCoder Beginner Contest 305) 2196 1040 892 +18
Toyota Programming Contest 2023#3(AtCoder Beginner Contest 306) 3563 - - -
Tokio Marine & Nichido Fire Insurance Programming Contest 2023(AtCoder Beginner Contest 307) 2738 872 890 -2
AtCoder Beginner Contest 308 3054 903 891 +1
freee Programming Contest 2023(AtCoder Beginner Contest 310) 3696 983 901 +10
Toyota Programming Contest 2023#4(AtCoder Beginner Contest 311) 2281 1127 926 +25
UNIQUE VISION Programming Contest 2023 Summer(AtCoder Beginner Contest 312) 3833 780 912 -14
AtCoder Beginner Contest 313 3877 801 901 -11
AtCoder Beginner Contest 314 2240 1093 922 +21
AtCoder Beginner Contest 319 8258 533 888 -34
Toyota Programming Contest 2023#5(AtCoder Beginner Contest 320) 2461 1103 912 +24
SuntoryProgrammingContest2023(AtCoder Beginner Contest 321) 2904 995 920 +8
AtCoder Beginner Contest 322 3766 802 909 -11
UNIQUE VISION Programming Contest 2023 Autumn(AtCoder Beginner Contest 323) 2114 1172 938 +29
Japan Registry Services (JPRS) Programming Contest 2023 (AtCoder Beginner Contest 324) 5071 596 908 -30
KEYENCE Programming Contest 2023 Autumn(AtCoder Beginner Contest 325) 1902 1116 931 +23
HHKB Programming Contest 2023(AtCoder Beginner Contest 327) 4043 794 918 -13
Toyota Programming Contest 2023#7(AtCoder Beginner Contest 328) 2797 1015 928 +10
Sky Inc, Programming Contest 2023(AtCoder Beginner Contest 329) 5106 526 893 -35
TOYOTA SYSTEMS Programming Contest 2023(AtCoder Beginner Contest 330) 4740 569 865 -28
AtCoder Beginner Contest 332 2914 857 864 -1
Toyota Programming Contest 2023#8(AtCoder Beginner Contest 333) 5017 688 848 -16
AtCoder Beginner Contest 335 (Sponsored by Mynavi) 3134 936 857 +9
AtCoder Beginner Contest 336 3625 794 851 -6
AtCoder Beginner Contest 338 2952 952 861 +10
Japan Registry Services (JPRS) Programming Contest 2024 (AtCoder Beginner Contest 339) 3508 923 867 +6
KAJIMA CORPORATION CONTEST 2024(AtCoder Beginner Contest 340) 2784 983 880 +13
Toyota Programming Contest 2024#2(AtCoder Beginner Contest 341) 4589 730 865 -15
AtCoder Beginner Contest 343 3774 892 868 +3
Toyota Programming Contest 2024#3(AtCoder Beginner Contest 344) 2111 1206 907 +39
UNIQUE VISION Programming Contest 2024 Spring(AtCoder Beginner Contest 346) 4260 794 896 -11
AtCoder Beginner Contest 347 4526 768 884 -12
Toyota Programming Contest 2024#4(AtCoder Beginner Contest 348) 3371 919 887 +3
AtCoder Beginner Contest 349 4225 795 878 -9
AtCoder Beginner Contest 350 3755 900 881 +3
AtCoder Beginner Contest 351 3702 894 882 +1
AtCoder Beginner Contest 352 4823 728 867 -15
AtCoder Beginner Contest 353 6258 561 840 -27
Tokio Marine & Nichido Fire Insurance Programming Contest 2024 (AtCoder Beginner Contest 355) 4678 699 827 -13
AtCoder Beginner Contest 356 4633 818 826 -1
SuntoryProgrammingContest2024(AtCoder Beginner Contest 357) 5668 620 807 -19
AtCoder Beginner Contest 358 3703 923 819 +12
UNIQUE VISION Programming Contest 2024 Summer (AtCoder Beginner Contest 359) 3052 1028 842 +23
AtCoder Beginner Contest 360 1771 1219 886 +44
Denso Create Programming Contest 2024(AtCoder Beginner Contest 361) 5927 586 859 -27
Toyota Programming Contest 2024#7(AtCoder Beginner Contest 362) 4675 788 852 -7
AtCoder Beginner Contest 363 5791 630 832 -20
Japan Registry Services (JPRS) Programming Contest 2024#2 (AtCoder Beginner Contest 364) 5250 639 814 -18
AtCoder Beginner Contest 366 4691 769 809 -5
AtCoder Beginner Contest 367 5801 605 790 -19
AtCoder Beginner Contest 369 2946 1021 816 +26
AtCoder Beginner Contest 371 3490 952 830 +14
UNIQUE VISION Programming Contest 2024 Autumn (AtCoder Beginner Contest 372) 3876 803 827 -3
AtCoder Beginner Contest 373 4827 761 821 -6
KEYENCE Programming Contest 2024(AtCoder Beginner Contest 374) 5142 702 810 -11
Panasonic Programming Contest 2024(AtCoder Beginner Contest 375) 5870 599 790 -20
AtCoder Beginner Contest 376 5768 597 772 -18
TOYOTA SYSTEMS Programming Contest 2024(AtCoder Beginner Contest 377) 2679 945 791 +19
AtCoder Beginner Contest 380 4256 781 790 -1
Daiwa Securities Co. Ltd. Programming Contest 2024(AtCoder Beginner Contest 383) 3424 893 800 +10
Toyota Programming Contest 2024#12(AtCoder Beginner Contest 384) 1897 1220 850 +50
UNIQUE VISION Programming Contest 2024 Christmas (AtCoder Beginner Contest 385) 5934 459 816 -34
Toyota Programming Contest 2025(AtCoder Beginner Contest 389) 4573 756 810 -6
AtCoder Beginner Contest 390 2660 1082 841 +31
AtCoder Beginner Contest 391 3230 937 851 +10
Japan Registry Services (JPRS) Programming Contest 2025#1 (AtCoder Beginner Contest 392) 5945 567 825 -26
AtCoder Beginner Contest 393 5694 596 804 -21
KAJIMA CORPORATION CONTEST 2025 (AtCoder Beginner Contest 394) 4640 749 799 -5
AtCoder Beginner Contest 395 2487 1109 834 +35
UNIQUE VISION Programming Contest 2025 Spring (AtCoder Beginner Contest 398) 6064 536 807 -27
AtCoder Beginner Contest 400 5524 641 792 -15
AtCoder Beginner Contest 401 5919 578 772 -20
Tokio Marine & Nichido Fire Insurance Programming Contest 2025 (AtCoder Beginner Contest 402) 4397 722 767 -5
AtCoder Beginner Contest 403 2146 1102 805 +38
AtCoder Beginner Contest 404 3698 862 811 +6
AtCoder Beginner Contest 405 3427 966 828 +17
Panasonic Programming Contest 2025(AtCoder Beginner Contest 406) 4580 764 821 -7
AtCoder Beginner Contest 407 4029 857 825 +4
AtCoder Beginner Contest 408 3629 876 830 +5
AtCoder Beginner Contest 410 6651 435 796 -34
UNIQUE VISION Programming Contest 2025 Summer (AtCoder Beginner Contest 411) 4268 692 786 -10
AtCoder Beginner Contest 412 2678 1050 816 +30
Denso Create Programming Contest 2025(AtCoder Beginner Contest 413) 6017 485 786 -30
Mirrativ Programming Contest 2025 (AtCoder Beginner Contest 414) 3889 857 794 +8
Japan Registry Services (JPRS) Programming Contest 2025#2 (AtCoder Beginner Contest 415) 3308 930 808 +14
AtCoder Beginner Contest 417 3675 910 819 +11
AtCoder Beginner Contest 418 5446 637 802 -17
AtCoder Beginner Contest 421 2388 1145 841 +39
AtCoder Beginner Contest 423 3009 906 848 +7
AtCoder Beginner Contest 424 2566 992 863 +15
AtCoder Beginner Contest 426 3301 980 875 +12
Panasonic Programming Contest 2025(AtCoder Beginner Contest 427) 4690 687 858 -17
AtCoder Beginner Contest 428 5446 606 835 -23
Polaris.AI Programming Contest 2025(AtCoder Beginner Contest 429) 3073 937 846 +11
AtCoder Beginner Contest 430 3420 840 845 -1
TOYOTA SYSTEMS Programming Contest 2025(AtCoder Beginner Contest 431) 2862 1020 864 +19
AtCoder Beginner Contest 433 4164 878 865 +1
Sky Inc, Programming Contest 2025 (AtCoder Beginner Contest 434) 5382 423 828 -37
AtCoder Beginner Contest 435 3934 881 833 +5
AtCoder Beginner Contest 436 5026 737 824 -9
UNIQUE VISION Programming Contest 2025 Christmas (AtCoder Beginner Contest 437) 5272 673 810 -14
AtCoder Beginner Contest 440 5863 617 792 -18
AtCoder Beginner Contest 441 (Promotion of Engineer Guild Fes) 3251 1079 824 +32
JPRS Programming Contest 2026#1 (AtCoder Beginner Contest 442) 6721 431 790 -34
Denso Create Programming Contest 2026(AtCoder Beginner Contest 443) 6662 419 758 -32
AtCoder Beginner Contest 444 4480 915 775 +17
AtCoder Beginner Contest 445 3283 1013 801 +26
AtCoder Beginner Contest 446 4989 591 782 -19
AtCoder Beginner Contest 447 4090 854 789 +7
AtCoder Beginner Contest 449 7426 409 756 -33
AtCoder Beginner Contest 450 4963 826 763 +7
AtCoder Beginner Contest 452 6791 524 742 -21
AtCoder Beginner Contest 453 5396 743 742 ±0
Keysight Technologies Programming Contest(AtCoder Beginner Contest 454) 2469 1192 795 +53
Sky Inc, Programming Contest 2026 (AtCoder Beginner Contest 455) 3261 1049 823 +28
AtCoder Beginner Contest 456 5575 663 808 -15
Polaris.AI Programming Contest 2026(AtCoder Beginner Contest 457) 6849 401 774 -34
AtCoder Beginner Contest 458 4237 946 792 +18
AtCoder Beginner Contest 460 5459 787 792 ±0
CodeQUEEN 2026 -qual- (AtCoder Beginner Contest 462) 7081 491 765 -27
AtCoder Beginner Contest 463 6788 550 745 -20
Japanese Student Championship 2026 -Advance- Qualification (AtCoder Beginner Contest 464) 4682 765 747 +2
AtCoder Beginner Contest 465 4492 932 767 +20
AtCoder Beginner Contest 466 7351 513 744 -23
AtCoder Beginner Contest 467 8110 368 711 -33
AtCoder Beginner Contest 469 3689 1059 751 +40
AtCoder Beginner Contest 473 4695 888 766 +15