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

void printll(long long c)
{
	int ss[100];
	int i = 0;
	do {
		ss[i++] = c % 10LL;
		c /= 10LL;
	} while (c);
	i--;
	while (i>=0) {
		printf("%d", ss[i]);
		i--;
	}
}


int main(void)
{
	long long a = 1000000000LL;
	long long b = 2000000000LL;
	long long c = a * b;
//	printf("%Ld\n", c);
	printll(c);
	system("pause");
	return 0;
}