Submission #5792252


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#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define repf(i, j, n) for (int i = (j); i < (n); i++)
#define repr(i, n) for (int i = (n)-1; i >= 0; i--)

signed main() {
  string s;
  cin >> s;
  int n = s.size();
  map<char, int> cnt;
  for (auto&& u : s) cnt[u]++;
  int ret = n * (n - 1) / 2 + 1;
  for (auto&& u : cnt) ret -= u.second * (u.second - 1) / 2;
  cout << ret << endl;
}

Submission Info

Submission Time
Task B - Reverse and Compare
User mnrutd
Language C++14 (GCC 5.4.1)
Score 500
Code Size 470 Byte
Status
Exec Time 13 ms
Memory 640 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 1 ms 256 KB
sample_02.txt 1 ms 256 KB
sample_03.txt 1 ms 256 KB
subtask_1_01.txt 1 ms 256 KB
subtask_1_02.txt 8 ms 640 KB
subtask_1_03.txt 1 ms 256 KB
subtask_1_04.txt 1 ms 256 KB
subtask_1_05.txt 1 ms 256 KB
subtask_1_06.txt 1 ms 256 KB
subtask_1_07.txt 2 ms 256 KB
subtask_1_08.txt 13 ms 640 KB
subtask_1_09.txt 9 ms 640 KB
subtask_1_10.txt 9 ms 640 KB
subtask_1_11.txt 12 ms 640 KB
subtask_1_12.txt 9 ms 640 KB
subtask_1_13.txt 9 ms 640 KB
subtask_1_14.txt 8 ms 640 KB
subtask_1_15.txt 8 ms 640 KB
subtask_1_16.txt 9 ms 640 KB
subtask_1_17.txt 9 ms 640 KB