func_code_string: #include <bits/stdc++.h>   using namespace std;   long long ax, ay, bx, by, cx, cy;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     cin >> ax >> ay >> bx >> by >> cx >> cy;     if ((by - ay) * (cx - bx) == (cy - by) * (bx - ax))       cout <<  NO n ;     else if ((by - ay) * (by - ay) + (bx - ax) * (bx - ax) ==              (by - cy) * (by - cy) + (bx - cx) * (bx - cx))       cout <<  YES n ;     else       cout <<  NO n ;     return 0;   }   