# include<iostream>
using namespace std;
int main()
{
	int a,b,c;
	cin>>a>>b;
	if(a<=10^2020){
		if(b<=10^2020){
			if(a>=0){
				if(b>=0){
										cout<<a*b;				
					}
			}
			else
			{
				cout<<"请输入非负整数";
			}
		}
	}
	else{
		cout<<"请输入非负整数";
	}
	return 0;
}