#include <stdio.h>
#include <string.h>

#define Arrsize 2003
#define ansArrsize 4000000

int a[Arrsize];
int b[Arrsize];
int c[ansArrsize] = { 0 };

int main() {
	char temp[Arrsize];
	scanf(" %s", temp);
	int la = strlen(temp);

	for (int i = 0; i < la; i++) {
		a[la - i] = temp[i]-'0';
	}


	scanf(" %s", temp);
	int lb = strlen(temp);

	for (int i = 0; i < lb; i++) {
		b[lb - i] = temp[i]-'0';
	}


	for (int i = 1; i <= la; i++) {
		for (int j = 1; j <= lb; j++) {
			c[i + j - 1] += a[i] * b[j];
			if (c[i + j - 1] >= 10) {
				c[i + j] += c[i + j - 1] / 10;
				c[i + j - 1] %= 10;
			}
		}
	}

	int lc = la > lb ? la : lb;

	while (c[lc+1] > 0) {
		lc++;
	}
	while (c[lc] == 0 && lc>1) {
		lc--;
	}

	for (int i = lc; i >= 1; i--) {
		printf("%d", c[i]);
	}
	return 0;
}