Submission

Score: 100

User: sakuragichan

Problemset: ISBN

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-08 17:40:04

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

int main() {
	int n1,n2,n3,n4,n5,n6,n7,n8,n9;
	cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8 >> n9;
	int sum =  11-((10*n1+9*n2+8*n3+7*n4+6*n5+5*n6+4*n7+3*n8+2*n9)%11);
    if (sum == 11) {
        sum = 0;
    }
    cout << sum;
    return 0;
}