Submission

Score: 100

User: 666whynot

Problemset: ISBN

Language: cpp

Time: 0.002 second

Submitted On: 2025-07-29 19:34:19

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

int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    int n[10];
    int sum = 0;
    for(int i=0;i<9;i++){
        cin >> n[i];
    }
    for(int i=0;i<9;i++){
        sum += (10-i) * n[i];
    }
    cout << (11 - sum % 11) % 11;

}