Submission

Score: 95

User: JRomsponCH

Problemset: ISBN

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-01 10:42:18

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

int main() {
    long long sum = 0;
    int arr[9];
    for (int i = 0; i < 9; i++) {
        cin>>arr[i];
    }
    for (int i = 10; i >= 2; i--) {
        sum += i*arr[10-i];
    }
    long long number = 11 - (sum % 11);
    cout<<number;
}