Problem:
Score : 100 points

Problem Statement

Compute A \times B.

Constraints

1 \leq A \leq 100

1 \leq B \leq 100

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the value A \times B as an integer.

Sample Input 1

2 5

Sample Output 1

10

We have 2 \times 5 = 10.

Sample Input 2

100 100

Sample Output 2

10000

Solution in C# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;

class _169C
{
    static void Main()
    {
        long A;
        double B;
        string str;
        string[] str_array;
        int B_int;
        double B_sho;

        str = Console.ReadLine();
        str_array = str.Split(' ');

        A = long.Parse(str_array[0]);

        B = double.Parse(str_array[1]);


        //A = (long)9e+15;
        //B = 9.9;

        B_int = (int)B;

        B_sho = B - B_int;

        Console.WriteLine(A * B_int + (int)(A * B_sho));


    }
}