#include <stdio.h>
#include <stdlib.h>

int main (void) {
	int i = 0;
	int j = 0;
	
	while (C()) {
		f();
	}
	
	if (C()) {
		do {
			f();
		} while (C());
	}
	
	for( ; C(); ) {
		f();
	}
}