using System;
using System.Linq;  

public class Kata
    {
      private const int monmeValue = 60;
    
        public static int[] PurchaseTofu(int cost, string box)
        {
            string[] boxSplited = box.Split(' ');
            
            var monCount = boxSplited.Count(x => x == "mon");//one foreach will be faster than this 2 lines but this is easier to read
            var monmeCount = boxSplited.Count(x => x == "monme");

            var totalValue = monCount + (monmeCount * monmeValue);

            int monmeCounter = Math.Min(cost / monmeValue, monmeCount);
            cost -= monmeCounter * monmeValue;

            return (monCount < cost) ? 
              new[] { 0 } : //leaving the market
              new[] { monCount, monmeCount, totalValue, monmeCounter + cost };
        }
    }