https://www.acmicpc.net/problem/10869
using System;
namespace baekjoon
{
class Program
{
static void Main(string[] args)
{
string input = Console.ReadLine();
string[] strNumbers = input.Split(' ');
int intNumberA = int.Parse(strNumbers[0]);
int intNumberB = int.Parse(strNumbers[1]);
Console.WriteLine(intNumberA + intNumberB);
Console.WriteLine(intNumberA - intNumberB);
Console.WriteLine(intNumberA * intNumberB);
Console.WriteLine(intNumberA / intNumberB);
Console.WriteLine(intNumberA % intNumberB);
}
}
}