#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES

#include "bits/stdc++.h"
#include <vector>
#include <set>
#include <string>
#include <queue>
#include <list>
#define REP(i,a,b) for(i=a;i<b;++i)
#define rep(i,n) REP(i,0,n)
#define ll long long
#define ull unsigned ll
typedef long double ld;
#define SQR(X)  ( (X)*(X) )
#define CUBE(X) ( (X)*(X)*(X) )

// #define int ll

using namespace std;

bool test = 0;

/* ここからが本編 */

int main(void)
{
  int i,j,k,l;
  double v,t;
  cin >> v >> t;
  double ans;
  double& p = ans;
  modf(v*t,&p);
  printf("%.0lf\n",ans);
  return 0;
}