func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long;   int main() {     int a, b, c;     cin >> a >> b >> c;     if (!c) return cout << (a == b ?  YES  :  NO ), 0;     if (c > 0 && b < a || c < 0 && b > a) return cout <<  NO , 0;     cout << ((a % c + c) % c == (b % c + c) % c ?  YES  :  NO );     return 0;   }   