Submission

Score: 95

User: Karatat007

Problemset: ISBN

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-03 21:11:31

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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int sum = 0;
    for(int i = 0;i < 9;++i){
        int n;
        cin >> n;
        sum += (10 - i) * n;
    }
    cout << 11 - abs(sum % 11);  
}