#include<bits/stdc++.h>
using namespace std;
 
int multipletest;
const int DEBUGGER = 0;
 
#define io                          ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL)
#define mset(a,v)                   memset(a,v,sizeof(a))
#define lp(i,a,n)                   for(int i=a;i<n;i++)
#define lpr(i,a,n)                  for(int i=n-1;i>=a;i--)
#define stlp(it,stl)                for(__typeof(stl.begin()) it=stl.begin();it!=stl.end();it++)
#define stlpr(it,stl)               for(__typeof(stl.rbegin()) it=stl.rbegin();it!=stl.rend();it++)
#define r(a)                        a.begin(),a.end()
#define II                          ({ ll TEMP; cin>>TEMP; TEMP; })
#define SI                          ({ string TEMP; cin>>TEMP; TEMP; })
#define AI(a)                       ({ int n=sizeof(a)/sizeof(a[0]); lp(I,0,n)a[I]=II; })
#define AO(a)                       ({ int n=sizeof(a)/sizeof(a[0]); lp(I,0,n){cout<<(I?" ":"")<<a[I];} if(1)cout<<endl; })
#define VI(v)                       ({ lp(I,0,v.size())v[I]=II; })
#define VO(v)                       ({ lp(I,0,v.size()){cout<<(I?" ":"")<<v[I];} if(1)cout<<endl; })
#define outa(a)                     ({ if(DEBUGGER)dbg(a); else cout<<a<<endl; })
#define dbg(a)                      ({ if(DEBUGGER)cout<<#a<<" = "<<a<<endl; })
#define cbit(n,p)                   (n&(1LL<<p))
#define sbit(n,p)                   (n|(1LL<<p))
#define tbit(n,p)                   (n^(1LL<<p))
 
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
 
const ll MAX = 2e5+5;
const ll MOD = 1e9+7;
const ll INF = 9e18;
const double PI = 3.141592653589793238462;
ll addM(ll a,ll b){a+=b; a>=MOD?a-=MOD:0; return a;}
ll subM(ll a,ll b){a-=b; a<0?a+=MOD:0; return a;}
 
void solve(){
    double x,y;
    cin>>x>>y;
    outa(x*y);
}
 
int main(void){
    io;
    multipletest=0;
    if(multipletest){
        int tc;
        cin>>tc;
        while(tc--)
            solve();
    }
    else
        solve();
    return 0;
}