Submission

Score: 100

User: nattawin

Problemset: ISBN

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-07 08:48:58

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

int main()
{
	int a[9],num = 0;
	for(int i = 0 ; i < 9 ; i++)
	{
		cin>>a[i];
		num+=(10-i)*a[i];
	}
	for(int i = 0 ; i <= 11 ; i++)
	{
		if((num+i)%11==0&&num+1!=0)
		{
			cout<<i;
			return 0;
		}
	}
}