Submission #23108

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Source Code Expand

using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
 
 class Solver
{
    public void Solve()
    {
        var N = int.Parse(Console.ReadLine());
        var rs = Console.ReadLine();
 
        var sum = 0.0;
        var list = new List<double>();
        foreach (var r in rs)
        {
            if( r!='F')
                sum += (4 - (r - 'A'));
        }
        Console.WriteLine(sum / N);
    }
 
 
#if !DEBUG
    static void Main(string[] args)
    {
        new Solver().Solve();
    }
#endif
}

Submission Info

Judge Result