백준 C# 25304

using System;

namespace baek2
{
    class Program
    {
        static void Main(string[] args)
        {
            string input_total = Console.ReadLine();
            string input_n = Console.ReadLine();
            
            int total = int.Parse(input_total);
            int n = int.Parse(input_n);
            
            int final_total = 0;

            while(n>0)
            {
                string input_price = Console.ReadLine();
                string[] price = input_price.Split();

                int a = int.Parse(price[0]);
                int b = int.Parse(price[1]);

                final_total += a * b;
                n--;
            }
            if (final_total == total) Console.WriteLine("Yes");
            else Console.WriteLine("No");
        }
    }
}