Submission

Score: 100

User: nxtx_ss

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-02 11:10:54

#include<iostream>
#include<vector>
#include<string.h>
using namespace std;
int main() {
	int R=0;
	string a;
	cin>>a;
	vector<int> v(16);
	for(int i=0; i<16; i++){
		v[i]=a[i]-'0';
	}
	for(int i=0; i<15; i++){
		if(i%2==0){
			v[i]=v[i]*2;
		}
	}
	for(int i=0; i<15; i++){
		if(v[i]>=0){
			v[i]=(v[i]/10)+(v[i]%10);
		}
		R=R+v[i];
	}
	if (((10-(R%10)))%10==v[15]) {
		cout<<"yes";
	}
	else{
		cout<<"no";
	}
}