#include <iostream>
#include <vector>
#include <string>
using namespace std;

vector<int> mul(vector<int> &A,int b){
    vector<int> C;
    int t = 0;
    for(int i=0;i<A.size()||t;i++){
        if(i<A.size()) t += A[i]*b;
        C.push_back(t%10);
        t /= 10;
    }
    while(C.size()>1&&C.back()==0) C.pop_back();
    return C;
    
}

int main(){
    string a;
    vector<int> A;
    int b;
    cin>>a>>b;
    
    for(int i=a.size()-1;i>=0;i--) A.push_back(a[i]-'0');
    
    auto C = mul(A,b);
    
    for(int i=C.size()-1;i>=0;i--) cout<<C[i];
    
    return 0;
    
}