func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int ax, ay, bx, by, cx, cy;   double k1, k2, k3;   int main() {     long long int dis_ab, dis_ac, dis_bc, max_dis = -1;     cin >> ax >> ay >> bx >> by >> cx >> cy;     dis_ab = (ax - bx) * (ax - bx) + (ay - by) * (ay - by);     k1 = (double)(ax - bx) / (ay - by);     dis_ac = (ax - cx) * (ax - cx) + (ay - cy) * (ay - cy);     k2 = (double)(ax - cx) / (ay - cy);     dis_bc = (bx - cx) * (bx - cx) + (by - cy) * (by - cy);     k3 = (double)(bx - cx) / (by - cy);     if (k1 == k2 && k2 == k3)       cout <<  No ;     else {       if (dis_ab == dis_bc)         cout <<  Yes ;       else         cout <<  No ;     }     return 0;   }   