Submission

Score: 100

User: rice_ot

Problemset: สุ่มสลับ

Language: cpp

Time: 0.074 second

Submitted On: 2025-10-14 14:02:12

#include <bits/stdc++.h>
using namespace std;

int main(){
    int n; cin>>n;
    vector<char> word(n);
    for(auto& i : word) cin>>i;
    int cnt = 0;
    do{
        cnt++;
        //for(auto& i : word) cout<<i;
        //cout<<"\n";
    }while(prev_permutation(word.begin(), word.end()));
    cout<<cnt;
}