#include <stdio.h>


int main() {

  float x = 1e12;
  float y = 1e-12;
  float z = x+y;

  printf("x= %e\n", x);
  printf("y= %e\n", y);
  printf("z= %e\n", z);
  printf("%d\n", x==z);
  
  return 0;
}