#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main(void){
    double i, j, k, n, a, b, po=0, po0=0;
    long long int ans=1;
    scanf("%lf %lf", &a, &b);
    ans = (long long int)a*b;
    printf("%lld", ans);
    
}