#include <cstdio>
#include <ctime>
#include <cstdlib>

int main()
{
	int time_ = 0;
	int time_be = 0;
	int time_rv = 0;
	
   time_ = 1;
	
	time_be = time_ + time(NULL);
	time_rv = time(NULL);
	system("cls");
	
	while (time(NULL) != time_be) {
		if (time(NULL) >= time_rv) {
			++time_rv;
			--time_;
			system("cls");
			printf("%d", time_);
		}
	}
	
	system("cls");
	while(1)
		printf("\a");
	printf("over!!!");
	
	return 0;
}