Submission

Score: 100

User: cheetah

Problemset: ISBN

Language: cpp

Time: 0.002 second

Submitted On: 2026-06-03 23:56:28

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

int main () {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

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

    if (sum % 11 == 0) {
        cout << 0;
    }
    else {
        cout << 11 - (sum % 11);
    }
    
    return 0;
}