Submission

Score: 90

User: Nuttykub

Problemset: ISBN

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-01 22:51:27

#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    vector<int> vec;
    int a;
    for (int i = 0;i < 9;i++){
        cin >> a;
        vec.push_back(a);
    }
    int total = 0;
    for (int i =10;i >=2;i--){
        total+=i*vec[10-i];
    }
    if (11-(total%11) == 10) return 0;
    else cout << 11-(total%11);

}