Submission

Score: 100

User: SushiCodelnw

Problemset: ISBN

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-09 08:34:49

// #include <bits\stdc++.h>
#include <iostream>

using namespace std;

int main() {
    int sum = 0;

    for (int i = 0; i < 9; i++) {
        int m;
        cin >> m;

        sum += (10-i) * m;
    }

    sum %= 11;

    cout << (11 - sum) % 11;

    return 0;
}