Submission

Score: 95

User: chs_14

Problemset: ISBN

Language: cpp

Time: 0.002 second

Submitted On: 2026-01-20 15:44:57

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

int main() {
    cin.tie(0)->sync_with_stdio();

    vector<int> isbn(9);
    int sum = 0;
    for (int i = 0; i < 9; i++)
    {
        cin >> isbn[i];
        sum+=(10-i)*isbn[i];
    }

    cout << ((sum/11)+1)*11 - sum;


    return 0;
}