Submission #1793054


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using ld = long double;
 
int main() {
    string s;
    cin >> s;
    map<char, ll> m;
    for(auto c : s) {
        m[c]++;
    }
    ll res = s.size() * (s.size() - 1) / 2 + 1;
    for(auto& p : m) {
        res -= p.second * (p.second - 1) / 2;
    }
    cout << res << endl;
}

Submission Info

Submission Time
Task B - Reverse and Compare
User Suibaka
Language C++14 (GCC 5.4.1)
Score 500
Code Size 425 Byte
Status AC
Exec Time 13 ms
Memory 640 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 23
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All 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 AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
subtask_1_01.txt AC 1 ms 256 KB
subtask_1_02.txt AC 8 ms 640 KB
subtask_1_03.txt AC 1 ms 256 KB
subtask_1_04.txt AC 1 ms 256 KB
subtask_1_05.txt AC 1 ms 256 KB
subtask_1_06.txt AC 1 ms 256 KB
subtask_1_07.txt AC 2 ms 256 KB
subtask_1_08.txt AC 13 ms 640 KB
subtask_1_09.txt AC 9 ms 640 KB
subtask_1_10.txt AC 10 ms 640 KB
subtask_1_11.txt AC 12 ms 640 KB
subtask_1_12.txt AC 9 ms 640 KB
subtask_1_13.txt AC 9 ms 640 KB
subtask_1_14.txt AC 8 ms 640 KB
subtask_1_15.txt AC 8 ms 640 KB
subtask_1_16.txt AC 9 ms 640 KB
subtask_1_17.txt AC 9 ms 640 KB