#include "bits/stdc++.h" #define REP(i, n, N) for(ll i=(n); i<(N); i++) #define RREP(i, n, N) for(ll i=(N-1); i>=n; i--) #define CK(n, a, b) ((a)<=(n)&&(n)<(b)) #define ALL(v) (v).begin(),(v).end() #define MCP(a, b) memcpy(b,a,sizeof(b)) #define p(s) cout<<(s)<> typedef long long ll; using namespace std; const ll mod = 1e9 + 7; const ll inf = 1e18; ll A,B; int main() { cin>>A>>B; string n=to_string(A); string m=to_string(B); ll n10=pow(10,n.size()-1-(A<0)); ll m10=pow(10,m.size()-1-(B<0)); if(A%n10==0 && B%m10==0){ cout<<(A/n10)*(B/m10); REP(i,0,n.size()-1+m.size()-1-1){ cout<<0; } cout<