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: Runtime Error)

using System;
using System.Linq;

namespace codefes2017
{
    class Program
    {
        static void Main()
        {
            var s = Console.ReadLine().Split(' ').Select(st => int.Parse(st)).ToArray();

            int n = s[0];
            int m = s[1];

            for(int r = 0; r < n; r++){
                for(int c = 0; c < m; c++){
                    if(s[2] == (r * m + c * n) - r * c){
                        Console.WriteLine("Yes");
                        Environment.Exit(0);
                    }
                }
            }

            Console.WriteLine("No");
        }
    }
}