Submission #1547643


Source Code Expand

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
//---------------------------------------------------------------------------------------------------
/*---------------------------------------------------------------------------------------------------
            ∧_∧  
      ∧_∧  (´<_` )  Welcome to My Coding Space!
     ( ´_ゝ`) /  ⌒i     
    /   \     | |     
    /   / ̄ ̄ ̄ ̄/  |  
  __(__ニつ/     _/ .| .|____  
     \/____/ (u ⊃  
---------------------------------------------------------------------------------------------------*/
 
typedef long long ll;
string A;
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> A;
    int N = A.length();
 
    vector<int> cnt(26);
    ll ans = 1;
    rrep(i, N - 1, 0) {
        rep(j, 0, 26) if (j != (A[i] - 'a')) ans += cnt[j];
        cnt[A[i] - 'a']++;
    }
    cout << ans << endl;
}

Submission Info

Submission Time
Task B - Reverse and Compare
User hamayanhamayan
Language C++14 (GCC 5.4.1)
Score 500
Code Size 1331 Byte
Status AC
Exec Time 12 ms
Memory 720 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 11 ms 720 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 12 ms 720 KB
subtask_1_09.txt AC 11 ms 720 KB
subtask_1_10.txt AC 12 ms 720 KB
subtask_1_11.txt AC 12 ms 720 KB
subtask_1_12.txt AC 11 ms 720 KB
subtask_1_13.txt AC 12 ms 720 KB
subtask_1_14.txt AC 10 ms 720 KB
subtask_1_15.txt AC 11 ms 720 KB
subtask_1_16.txt AC 10 ms 720 KB
subtask_1_17.txt AC 11 ms 720 KB