#include <stdio.h>
#include "func1.c"
#include "func2.c"
#include "func3.c"

int main(int argc, char *argv[])
{
  int a;
  int b;
  int r;

  scanf("%d %d",&a,&b);

  r = func1(a,b);
  printf("func1 returns %d\n",r);

  r = func2(a,b);
  printf("func2 returns %d\n",r);
  
  r = func3(a,b);
  printf("func3 returns %d\n",r);
  
}