#include <bits/stdc++.h>
using namespace std;
using int64 = int64_t;
#define times(n, i) for (int i = 0; i < n; i++)
#define range(n, m, i) for (int i = n; i < m; i++)
#define upto(n, m, i) for (int i = n; i <= m; i++)
#define downto(n, m, i) for (int i = n; i >= m; i--)
#define foreach(xs, x) for (auto &x : xs)
#define all(xs) (xs).begin(), (xs).end()
#define sortall(xs) sort(all(xs))
#define reverseall(xs) reverse(all(xs))
#define uniqueall(xs) erase(unique(all(xs)), (xs).end())
int64 mod10e9_7 = 1000000007;

int main()
{
    double v; int t;
    cin >> v >> t;
    cout << int(floor(v*t+0.00009)) << endl;
    return 0;
}