func_code_string: #include <bits/stdc++.h>   using namespace std;   bool valid(long long num, long long den) {     if (den == 0) {       return num == 0;     } else {       return (num % den) == 0;     }   }   long long gcd(long long a, long long b) {     if (b == 0) {       return a;     } else {       return gcd(b, a % b);     }   }   bool valid(long long a, long long b, long long c) {     if (a == 0 && b == 0) {       return c == 0;     }     if (a < 0) {       a = -a;     }     if (b < 0) {       b = -b;     }     return c % gcd(a, b) == 0;   }   int main() {     long long ax, ay, bx, by, cx, cy;     cin >> ax >> ay >> bx >> by >> cx >> cy;     long long a_x = -ay, a_y = ax;     long long c_x = -cy, c_y = cx;     for (long long a = -1; a <= 1; ++a) {       for (long long a_ = -1; a_ <= 1; ++a_) {         if (abs(a) + abs(a_) == 1) {           long long X = bx - a * ax - a_ * a_x;           long long Y = by - a * ay - a_ * a_y;           long long num1 = X * c_y - Y * c_x;           long long den1 = cx * c_y - cy * c_x;           long long num2 = X * cy - Y * cx;           long long den2 = c_x * cy - c_y * cx;           bool ok;           if (den1 != 0 && den2 != 0) {             ok = (num1 % den1) == 0 && (num2 % den2) == 0;           } else {             if (cx == 0 && c_x == 0) {               ok = X == 0 && valid(cy, c_y, Y);             } else if (cy == 0 && c_y == 0) {               ok = Y == 0 && valid(cx, c_x, X);             } else {               if (cx == 0) {                 ok = (X % c_x) == 0 && (Y % c_y) == 0 && X / c_x == Y / c_y;               } else if (c_x == 0) {                 ok = (X % cx) == 0 && (Y % cy) == 0 && X / cx == Y / cy;               } else {                 ok = valid(cx, c_x, X) && X * cy == Y * cx;               }             }           }           if (ok) {             cout <<  YES  << endl;             return 0;           }         }       }     }     cout <<  NO  << endl;     return 0;   }   