Problem:
Score : 200 points

Problem Statement

In Japan, people make offerings called hina arare, colorful crackers, on March 3.

We have a bag that contains N hina arare. (From here, we call them arare.)

It is known that the bag either contains arare in three colors: pink, white and green, or contains arare in four colors: pink, white, green and yellow.

We have taken out the arare in the bag one by one, and the color of the i-th arare was S_i, where colors are represented as follows - pink: P, white: W, green: G, yellow: Y.

If the number of colors of the arare in the bag was three, print Three; if the number of colors was four, print Four.

Constraints

1 \leq N \leq 100

S_i is P, W, G or Y.

There always exist i, j and k such that S_i=P, S_j=W and S_k=G.

Input

Input is given from Standard Input in the following format:

N
S_1 S_2 ... S_N

Output

If the number of colors of the arare in the bag was three, print Three; if the number of colors was four, print Four.

Sample Input 1

6
G W Y P Y W

Sample Output 1

Four

The bag contained arare in four colors, so you should print Four.

Sample Input 2

9
G W W G P W P G G

Sample Output 2

Three

The bag contained arare in three colors, so you should print Three.

Sample Input 3

8
P Y W G Y W Y Y

Sample Output 3

Four

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();//, b = sc.nextInt();
		//int x=sc.nextInt();//,k=sc.nextInt();
		long sum=0,count=0,flag=0,max=-999999,min=99999;
		long[] array=new long[a];
		//String s=sc.next();//,t=sc.next();
		String buff;
		//String[] arrays = new String[a];
		for(int i=0;i<a;i++) {
			buff=sc.next();
			if(buff.equals("P")) {
				array[0]++;
			}else if(buff.equals("G")) {
				array[1]++;
			}else if(buff.equals("Y")) {
				array[2]++;
			}else {
				array[3]++;
			}
		}
		for(int i=0;i<a;i++) {
			if(array[i]!=0)count++;
		}

		if(count==3)System.out.println("Four");
		if(count==4)System.out.println("Three");
	}
	public static int sample(int n) {
		return n;
	}

}