[백준]C# 코딩 : 15552번(빠른 A + B)

https://www.acmicpc.net/problem/15552

15552번: 빠른 A+B

https://docs.microsoft.com/ko-kr/dotnet/api/system.text.stringbuilder?view=netcore-3.1 

StringBuilder 클래스 (System.Text)

using System;
using System.Text;

namespace backjoon
{
    class Program
    {
        static void Main(string[] args)
        {
            StringBuilder sb = new StringBuilder();

            int t = int.Parse(Console.ReadLine());

            for (int i = 0; i < t; i++)
            {
                string[] num = Console.ReadLine().Split();
                sb.Append(int.Parse(num[0]) + int.Parse(num[1]) + "\n");
            }
            Console.WriteLine(sb.ToString());
        }
    }
}