Test 5 BAC2021 SIII ex 1

#include <iostream>

using namespace std;

int main() {
    int n,a,b;
    bool ok=true;
    cin >> n;
    a=n%10;
    while(n!=0){
      b=n%10;
      n=n/10;
      if(b!=a){
           ok=false;
           break;
      }
    }
    if(ok==true) cout<<1;
     else cout<<0;
    return 0;
}