#include <stdio.h>

int main(){
  int x,y,z;

  x = 100;
  y = 200;
  z = x+y;
  printf("x + y = %d\n",z);

  z = x-y;
  printf("x - y = %d\n",z);

  z = x * y;
  printf("x * y = %d\n",z);


  return(0);
}