func_code_string: #include <bits/stdc++.h>   using namespace std;   int main(int argc, char* argv[]) {     long long ax, ay, bx, by, cx, cy, ab, bc;     double slopeAB, slopeBC;     cin >> ax >> ay >> bx >> by >> cx >> cy;     if (ax == cx && ay == cy) {       cout <<  Yes n ;     } else {       ab = (ax - bx) * (ax - bx) + (ay - by) * (ay - by);       bc = (cx - bx) * (cx - bx) + (cy - by) * (cy - by);       slopeAB = (double)(ay - by) / (double)(ax - bx);       slopeBC = (double)(by - cy) / (double)(bx - cx);       if (ab == bc && slopeAB != slopeBC) {         cout <<  Yes n ;       } else {         cout <<  No n ;       }     }     return 0;   }   