#include <stdio.h>
typedef struct{
char b[50];
}a;
int func(int x)
{
if(x<=1)
return 1;
else
return func(x-1)*x;
}
int main(void) {
int a=5;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+Cgp0eXBlZGVmIHN0cnVjdHsKCWNoYXIgYls1MF07CQp9YTsgCgppbnQgZnVuYyhpbnQgeCkKewoJaWYoeDw9MSkKCXJldHVybiAxOwoJCgllbHNlCglyZXR1cm4gZnVuYyh4LTEpKng7CgkKfQoKaW50IG1haW4odm9pZCkgewoJaW50IGE9NTsKCQoJcHJpbnRmKCIlZCAiLGZ1bmMoYSkpOwoJcmV0dXJuIDA7Cn0K