Submission

[PPPPPPPPPP]

Score: 100

User: brightokung

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.002 second

Submitted On: 2024-12-09 21:26:24

#include <iostream>
using namespace std;
char a[17];
const int x=16;
int main()
{
    scanf("%s",a+1);
    int sum=0, c=a[x]-'0';
    a[0]='0';
    for(int i=x-1;i>=1;i-=2)
    {
        int k=(a[i]-'0')*2;
        sum += (k/10)+(k%10);
        sum += a[i-1]-'0';
    }
    if((10-(sum%10))%10 == c)
        cout << "yes";
    else
        cout << "no";
}