Submission

Score: 100

User: matcherbrainner

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-19 21:06:36

#include<bits/stdc++.h>
using namespace std;
int main(){
	string code;
	cin>>code;
	int la=code[15]-'0';
	int f=0;
	for(int i=0;i<15;i++){
		int val=code[i]-'0';
		if(i%2==0){
			val*=2;
		}
		f+=(val/10)+(val%10);
	}
	int s=(10-(f%10))%10;
	if(s==la){
		cout<<"yes";
	}
	else{
		cout<<"no";
	}
}