Submission #5914263


Source Code Expand

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from collections import Counter

def main():
    A = input()
    N = len(A)
    ans = N * (N-1) // 2 + 1
    cnt = Counter(A)
    for c in cnt:
        ans -= cnt[c] * (cnt[c] - 1) // 2
    print(ans)


if __name__ == "__main__":
    main()

Submission Info

Submission Time
Task B - Reverse and Compare
User blcn
Language PyPy3 (2.4.0)
Score 500
Code Size 255 Byte
Status
Exec Time 186 ms
Memory 40048 KB

Judge Result

Set Name Score / Max Score Test Cases
Sample 0 / 0 sample_01.txt, sample_02.txt, sample_03.txt
All 500 / 500 sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt
Case Name Status Exec Time Memory
sample_01.txt 168 ms 38256 KB
sample_02.txt 174 ms 38256 KB
sample_03.txt 166 ms 38256 KB
subtask_1_01.txt 169 ms 38384 KB
subtask_1_02.txt 182 ms 40048 KB
subtask_1_03.txt 169 ms 38256 KB
subtask_1_04.txt 168 ms 38256 KB
subtask_1_05.txt 171 ms 38256 KB
subtask_1_06.txt 171 ms 38512 KB
subtask_1_07.txt 178 ms 38640 KB
subtask_1_08.txt 185 ms 40048 KB
subtask_1_09.txt 176 ms 40048 KB
subtask_1_10.txt 182 ms 40048 KB
subtask_1_11.txt 180 ms 40048 KB
subtask_1_12.txt 178 ms 40048 KB
subtask_1_13.txt 178 ms 40048 KB
subtask_1_14.txt 177 ms 40048 KB
subtask_1_15.txt 179 ms 40048 KB
subtask_1_16.txt 186 ms 40048 KB
subtask_1_17.txt 182 ms 40048 KB