#include<iostream> #include<cstdio> #include<string> #include<vector> using namespace std; vector<int> mul(vector<int>&a,int b) { vector<int>c; int t=0; for(int i=0;i<a.size();i++) { t+=a[i]*b; c.push_back(t%10); t/=10; } if(t!=0)c.push_back(t); while(c.size()>1&&c.back()==0)c.pop_back(); return c; } int main() { string s; int d; cin>>s>>d; vector<int>a; for(int i=s.size()-1;i>=0;i--)a.push_back(s[i]-'0'); vector<int>c=mul(a,d); for(int i=c.size()-1;i>=0;i--)printf("%d",c[i]); return 0; }