Submission

Score: 0

User: tull

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.003 second

Submitted On: 2026-06-03 00:05:02

#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define bp '\n'
#define ld long double
#define vp cout<<'\n';
#define all(A) A.begin(),A.end()
using pii=pair<int,int>;
const int MOD=1e9+7;
const int MNLL=-1e18;
const int MXLL=1e18;
const int N=2e5+10;
const string sans[]={"no","yes"};
signed main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    int cnt=0,lv=1;
    string a;
    cin>>a;
    for(int i=14;i>=0;--i){
        int x=a[i]-'0';
        if(i%2==0){
            x*=lv;
            lv+=2;
        }
        while(x){
            cnt+=x%10;
            x/=10;
        }
    }
    cout<<sans[(a[15]-'0'==(10-(cnt%10))%10)];
}
/*
5 7
taohu 0 1 7 9
mafuyu 2 5
ccsleep 2 4 7 25
sira 7
iris 32 64 128

*/