Problem:
Score : 100 points

Problem Statement

Ringo is giving a present to Snuke.

Ringo has found out that Snuke loves yakiniku (a Japanese term meaning grilled meat. yaki: grilled, niku: meat). He supposes that Snuke likes grilled things starting with YAKI in Japanese, and does not like other things.

You are given a string S representing the Japanese name of Ringo's present to Snuke. Determine whether S starts with YAKI.

Constraints

1 \leq |S| \leq 10

S consists of uppercase English letters.

Input

Input is given from Standard Input in the following format:

S

Output

If S starts with YAKI, print Yes; otherwise, print No.

Sample Input 1

YAKINIKU

Sample Output 1

Yes

YAKINIKU starts with YAKI.

Sample Input 2

TAKOYAKI

Sample Output 2

No

TAKOYAKI (a Japanese snack. tako: octopus) does not start with YAKI.

Sample Input 3

YAK

Sample Output 3

No

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

#region Using directives
using System;
using static System.Console;
using static System.Convert;
using System.Collections.Generic;
using System.Linq;
#endregion

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = ReadLine();
            if (s.Length >= 4)
                if (s[0] == 'Y' && s[1] == 'A' && s[2] == 'K' && s[3] == 'I')
                    WriteLine("Yes");
                else
                    WriteLine("No");
            else
                WriteLine("No");
        }
    }
}