@ -0,0 +1,14 @@
#include iostream
int main()
{
int x1, x2, y1, y2;
stdcin x1 x2 y1 y2;
if (x1 == y1 x2 == y2 x1 - y1 == x2 - y2 y1 - x1 == y2 - x2 -(x1 - y1) == x2 - y2 -(y1 - x1) == y2-x2) {
stdcout yes;
}
else{
stdcout no;
The note is not visible to the blocked user.