Submission #64144922

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
const int maxn = 2e6 + 5;

char s1[maxn], s[maxn];
int n, nxt[maxn];

int main() {
    scanf("%s", s1+1);
    n = strlen(s1+1);
    strcpy(s+1, s1+1);
    strcpy(s+n+1, s1+1);
    reverse(s+1, s+n+1);
//    cout << s + 1 << endl;

    for (int i = 2, j = 0; i <= 2*n; i++) {
        while (j && s[j+1] != s[i])
            j = nxt[j];
        if (s[j+1] == s[i]) j++;
        nxt[i] = j;
    }
    int m = nxt[2*n];
    while (m > n) m = nxt[m];

    printf("%s", s1+1);
    for (int i = n-m; i >= 1; i--)
        putchar(s1[i]);

    return 0;
}

Submission Info

Submission Time
Task F - ABCBA
User quanjun
Language C++ 17 (gcc 12.2)
Score 500
Code Size 623 Byte
Status AC
Exec Time 9 ms
Memory 9260 KiB

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:9:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    9 |     scanf("%s", s1+1);
      |     ~~~~~^~~~~~~~~~~~

Judge Result

Set Name Sample All after_contest
Score / Max Score 0 / 0 500 / 500 0 / 0
Status
AC × 3
AC × 36
AC × 32
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All sample_01.txt, sample_02.txt, sample_03.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt
after_contest after_contest_01.txt, after_contest_02.txt, after_contest_03.txt, after_contest_04.txt, after_contest_05.txt, after_contest_06.txt, after_contest_07.txt, after_contest_08.txt, after_contest_09.txt, after_contest_10.txt, after_contest_11.txt, after_contest_12.txt, after_contest_13.txt, after_contest_14.txt, after_contest_15.txt, after_contest_16.txt, after_contest_17.txt, after_contest_18.txt, after_contest_19.txt, after_contest_20.txt, after_contest_21.txt, after_contest_22.txt, after_contest_23.txt, after_contest_24.txt, after_contest_25.txt, after_contest_26.txt, after_contest_27.txt, after_contest_28.txt, after_contest_29.txt, after_contest_30.txt, after_contest_31.txt, after_contest_32.txt
Case Name Status Exec Time Memory
after_contest_01.txt AC 6 ms 9192 KiB
after_contest_02.txt AC 6 ms 9200 KiB
after_contest_03.txt AC 7 ms 9140 KiB
after_contest_04.txt AC 8 ms 9256 KiB
after_contest_05.txt AC 6 ms 9228 KiB
after_contest_06.txt AC 6 ms 8984 KiB
after_contest_07.txt AC 9 ms 9120 KiB
after_contest_08.txt AC 9 ms 9028 KiB
after_contest_09.txt AC 7 ms 9256 KiB
after_contest_10.txt AC 7 ms 9192 KiB
after_contest_11.txt AC 7 ms 9008 KiB
after_contest_12.txt AC 7 ms 9128 KiB
after_contest_13.txt AC 6 ms 9076 KiB
after_contest_14.txt AC 6 ms 9004 KiB
after_contest_15.txt AC 7 ms 9120 KiB
after_contest_16.txt AC 8 ms 9260 KiB
after_contest_17.txt AC 6 ms 9008 KiB
after_contest_18.txt AC 6 ms 9236 KiB
after_contest_19.txt AC 8 ms 8984 KiB
after_contest_20.txt AC 8 ms 9008 KiB
after_contest_21.txt AC 7 ms 9128 KiB
after_contest_22.txt AC 6 ms 9228 KiB
after_contest_23.txt AC 6 ms 9196 KiB
after_contest_24.txt AC 6 ms 9228 KiB
after_contest_25.txt AC 7 ms 9196 KiB
after_contest_26.txt AC 7 ms 9148 KiB
after_contest_27.txt AC 7 ms 8980 KiB
after_contest_28.txt AC 7 ms 9036 KiB
after_contest_29.txt AC 7 ms 9128 KiB
after_contest_30.txt AC 7 ms 9004 KiB
after_contest_31.txt AC 7 ms 9132 KiB
after_contest_32.txt AC 7 ms 8984 KiB
sample_01.txt AC 1 ms 3828 KiB
sample_02.txt AC 1 ms 3744 KiB
sample_03.txt AC 1 ms 3620 KiB
test_01.txt AC 1 ms 3756 KiB
test_02.txt AC 1 ms 3664 KiB
test_03.txt AC 1 ms 3828 KiB
test_04.txt AC 1 ms 3612 KiB
test_05.txt AC 1 ms 3892 KiB
test_06.txt AC 1 ms 3864 KiB
test_07.txt AC 1 ms 3868 KiB
test_08.txt AC 1 ms 3896 KiB
test_09.txt AC 1 ms 3760 KiB
test_10.txt AC 8 ms 9196 KiB
test_11.txt AC 8 ms 9032 KiB
test_12.txt AC 8 ms 9232 KiB
test_13.txt AC 8 ms 9132 KiB
test_14.txt AC 7 ms 8988 KiB
test_15.txt AC 6 ms 9196 KiB
test_16.txt AC 8 ms 9196 KiB
test_17.txt AC 6 ms 9232 KiB
test_18.txt AC 6 ms 9024 KiB
test_19.txt AC 6 ms 9260 KiB
test_20.txt AC 5 ms 9196 KiB
test_21.txt AC 8 ms 9232 KiB
test_22.txt AC 7 ms 9020 KiB
test_23.txt AC 7 ms 9020 KiB
test_24.txt AC 7 ms 9128 KiB
test_25.txt AC 6 ms 9144 KiB
test_26.txt AC 8 ms 9236 KiB
test_27.txt AC 8 ms 9228 KiB
test_28.txt AC 7 ms 9192 KiB
test_29.txt AC 8 ms 9192 KiB
test_30.txt AC 6 ms 9128 KiB
test_31.txt AC 8 ms 9008 KiB
test_32.txt AC 8 ms 9144 KiB
test_33.txt AC 8 ms 9196 KiB