#include <stdio.h>
int main(void) {
// your code goes here
int x=10,y=5;
x=x+y;
y=x-y;
x=x-y;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlCglpbnQgeD0xMCx5PTU7Cgl4PXgreTsKCXk9eC15OwoJeD14LXk7CglwcmludGYoIng9JWQgLCB5PSVkIix4LHkpOwoJcmV0dXJuIDA7Cn0K