Problem:
Score : 200 points

Problem Statement

Takahashi is participating in a programming contest called AXC002, and he has just submitted his code to Problem A.

The problem has N test cases.

For each test case i (1\leq i \leq N), you are given a string S_i representing the verdict for that test case. Find the numbers of test cases for which the verdict is AC, WA, TLE, and RE, respectively.

See the Output section for the output format.

Constraints

1 \leq N \leq 10^5

S_i is AC, WA, TLE, or RE.

Input

Input is given from Standard Input in the following format:

N
S_1
\vdots
S_N

Output

Let C_0, C_1, C_2, and C_3 be the numbers of test cases for which the verdict is AC, WA, TLE, and RE, respectively. Print the following:

AC x C_0
WA x C_1
TLE x C_2
RE x C_3

Sample Input 1

6
AC
TLE
AC
AC
WA
TLE

Sample Output 1

AC x 3
WA x 1
TLE x 2
RE x 0

We have 3, 1, 2, and 0 test case(s) for which the verdict is AC, WA, TLE, and RE, respectively.

Sample Input 2

10
AC
AC
AC
AC
AC
AC
AC
AC
AC
AC

Sample Output 2

AC x 10
WA x 0
TLE x 0
RE x 0

Solution in Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.util.*;
import java.io.*;

public class Main {

    public static void main(String[] args)throws Exception {
        InputReader in = new InputReader (System.in);
        PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));
        // Code starts from here //
        int t = in.nextInt();
        int ac = 0, wa = 0, tle = 0, re = 0;
        for (int i = 0; i < t; i++) {
            String s = in.next();
            if(s.equals("AC")) ac++;
            else if(s.equals("WA")) wa++;
            else if(s.equals("TLE")) tle++;
            else if(s.equals("RE")) re++;
        }
        pw.printf("AC x %d\n", ac);
        pw.printf("WA x %d\n", wa);
        pw.printf("TLE x %d\n", tle);
        pw.printf("RE x %d\n", re);


        pw.close();
    }





    /****************************************
     ******* IO STUFF STARTS FROM HERE ******
     ****************************************/

    static void debug(Object...obj) {
        System.err.println(Arrays.deepToString
                (obj));
    }

    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new
                    InputStreamReader(stream));
            tokenizer = null;
        }

        //InputReader in = new InputReader(new FileReader("File_Name"));
        public InputReader(FileReader file) {
            reader = new BufferedReader(file);
            tokenizer = null;
        }

        public String next() {

            try {
                while (tokenizer == null || !
                        tokenizer.hasMoreTokens())
                    tokenizer = new StringTokenizer
                            (reader.readLine());
            } catch (IOException e) {
                return null;
            }
            return tokenizer.nextToken();
        }

        public String nextLine() {
            String line = null;
            try {
                tokenizer = null;
                line =  reader.readLine();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            return line;
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }

        public double nextDouble() {
            return Double.parseDouble(next());
        }

        public long nextLong() {
            return Long.parseLong(next());
        }

        public boolean hasNext(){
            try {
                while (tokenizer == null || !
                        tokenizer.hasMoreTokens())
                    tokenizer = new StringTokenizer
                            (reader.readLine());
            }
            catch (Exception e) {
                return false;
            }
            return true;
        }
    }
}