#include <stdio.h>
int f1(int a, int b)
{
#define _MIN_(a,b) ((a)<(b) ? a : b)
return _MIN_(a, b);
}
int f2(int a, int b, int c)
{
return _MIN_(_MIN_(a,b), c);
}
int main()
{
printf("%d
", f1(2, 1));
printf("%d
", f2(5, 3, 2));
return 0;
}