Submission

Score: 100

User: karnsinee

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-18 21:29:17

#include<iostream>
#include<string>
using namespace std;
int main(){
	string a;
	int y,z;
	int sum,x;
	sum=0;
	cin>>a;
	y=a[15];

	/*for(int i=0;i<15;i++){
		//cout<<a[i];
	}*/
	x=0;
	//cout<<"\n";
	for(int i=0;i<15;i=i+2){
		x=a[i]-'0';
		x=x*2;
		//cout<<" "<<x;
		//cout<<"\n"<<x<<" ";
		//cout<<a[i];
		sum=sum+(x/10)+(x%10);
		//cout<<x/10<<x%10;
	}
	//cout<<sum;
	
	for(int i=1;i<14;i=i+2){
		sum=sum+(a[i]-'0');
	}
	//cout<<sum<<"\n";
	z=0;
	z=10-(sum%10);
	//cout<<z;
	if(y-'0'==z%10){
		cout<<"yes";
	}
	else{
		cout<<"no";
	}


}