Submission

Score: 100

User: .n0t_gloomy.

Problemset: ISBN

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-13 19:23:57

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int mul = 10;
    int sum = 0;
    for (int i = 0;i < 9;i++)
    {
        int x;
        cin>>x;
        sum += mul * x;
        mul--;
    }
    if (sum%11==0)
    {
        cout<<"0\n";
        return 0;
    }
    sum = 11 - (sum%11);
    cout<<sum<<"\n";
    return 0;
}