#include <stdio.h>
#include <string.h>
int x[100000];
int y[100000];
int c[100000];
char a[100000];
char b[100000];
int main() {
	
	scanf("%s", &a);
	scanf("%s", &b);
	int n=strlen(a);
	int m=strlen(b);
	for (int i = 0; i < n; i++) {
		x[i] = a[n - 1 - i] - '0';
	}
	for (int i = 0; i < m; i++) {
		y[i] = b[m - 1 - i] - '0';
	}
	int max = n+m -1;
	
	for (int i = 0; i < n; i++) {
	
		for (int j = 0; j < m; j++)
		{
			c[i + j] = c[i + j] + y[j] * x[i];
			if (c[i + j] >= 10) {
				int t = c[i + j];
				c[i + j] %= 10;
				c[i + j + 1] += t / 10;
				if (c[i + j] == max - 1)max++;
			}
			}


	}
	for (int i = 0; i < max; i++) {
		printf("%d", c[max - 1 - i]);
	}

	return 0;
}