#include <bits/stdc++.h>   using namespace std;   long long T, m, n, q, w, mi, ma, cnt, s, t, fi, cc, e, r, z, x, an, anx, any,       cx, cy;   long long d[5][2];   int main() {     scanf( %I64d%I64d , &m, &n);     scanf( %I64d%I64d , &e, &r);     scanf( %I64d%I64d , &cx, &cy);     for (int i = 0; i < 4; i++) {       q = e;       w = r;       d[i][0] = e - m;       d[i][1] = r - n;       e = -w;       r = q;     }     fi = 0;     for (int i = 0; i < 4; i++) {       if (d[i][0] == 0 && d[i][1] == 0) {         fi = 1;         break;       }       if (cx == 0 && cy == 0) continue;       if ((d[i][1] * cx - d[i][0] * cy) % (cx * cx + cy * cy) == 0)         if ((d[i][0] * cx + d[i][1] * cy) % (cx * cx + cy * cy) == 0) {           fi = 1;           break;         }     }     if (fi == 1)       puts( YES );     else       puts( NO );     return 0;   }   