Problem:
Score : 300 points

Problem Statement

Takahashi participated in a contest on AtCoder.

The contest had N problems.

Takahashi made M submissions during the contest.

The i-th submission was made for the p_i-th problem and received the verdict S_i (AC or WA).

The number of Takahashi's correct answers is the number of problems on which he received an AC once or more.

The number of Takahashi's penalties is the sum of the following count for the problems on which he received an AC once or more: the number of WAs received before receiving an AC for the first time on that problem.

Find the numbers of Takahashi's correct answers and penalties.

Constraints

N, M, and p_i are integers.

1 \leq N \leq 10^5

0 \leq M \leq 10^5

1 \leq p_i \leq N

S_i is AC or WA.

Input

Input is given from Standard Input in the following format:

N M
p_1 S_1
:
p_M S_M

Output

Print the number of Takahashi's correct answers and the number of Takahashi's penalties.

Sample Input 1

2 5
1 WA
1 AC
2 WA
2 AC
2 WA

Sample Output 1

2 2

In his second submission, he received an AC on the first problem for the first time. Before this, he received one WA on this problem.

In his fourth submission, he received an AC on the second problem for the first time. Before this, he received one WA on this problem.

Thus, he has two correct answers and two penalties.

Sample Input 2

100000 3
7777 AC
7777 AC
7777 AC

Sample Output 2

1 0

Note that it is pointless to get an AC more than once on the same problem.

Sample Input 3

6 0

Sample Output 3

0 0

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.io.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.stream.*;
import java.util.function.*;
import java.util.function.Predicate;
import java.math.BigInteger;
import java.rmi.MarshalException;
import java.time.Instant;
import java.time.Duration;
import java.util.concurrent.*;

public class Main {
    static String lastcard(String a, String b) {
        int k = a.length();
        String ret = "";
        for (int i = 0; i < k; i++) {
            if (a.charAt(i) == b.charAt(i)) {
                ret += a.charAt(i);
            } else {
                if (a.charAt(i) == 'S' && b.charAt(i) == 'E' || a.charAt(i) == 'E' && b.charAt(i) == 'S') {
                    ret += 'T';
                }
                else if (a.charAt(i) == 'S' && b.charAt(i) == 'T' || a.charAt(i) == 'T' && b.charAt(i) == 'S') {
                    ret += 'E';
                }
                else if (a.charAt(i) == 'E' && b.charAt(i) == 'T' || a.charAt(i) == 'T' && b.charAt(i) == 'E') {
                    ret += 'S';
                }
            }
        }
        return ret;
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        // long startTime = System.nanoTime();
        // int  = sc.next();
        // int  = sc.nextInt();
        /////////////////////////////////////////////////////
        int probs = sc.nextInt();
        int subs = sc.nextInt();
        boolean[] ac = new boolean[probs + 1];
        int[] pentrack = new int[probs + 1];
        int correct = 0;
        int penalty = 0;
        
        for (int i = 0; i < subs; i++) {
            int id = sc.nextInt();
            String s = sc.next();
            if (s.equals("WA") && ac[id] == false) {
                ++pentrack[id];
            } else if (s.equals("AC") && ac[id] == false) {
                ac[id] = true;
                ++correct;
            }
        }

        for (int i = 0; i < pentrack.length; ++i) {
            if (ac[i]) {
                penalty += pentrack[i];
            }
        }
        System.out.println(correct + " " + penalty);
        /////////////////////////////////////////////////////
        // long endTime = System.nanoTime();
        // System.out.printf("Executed in: %.2fms\n", ((double)endTime - startTime) / 1000000);
        // sc.close();
    }

    static boolean isEven(int n) {
        return n % 2 == 0;
    }
    static boolean isOdd(int n) {
        return n % 2 == 1;
    }
     
    static boolean isPrime(int n) {
        if (n == 0 || n == 1) {
            return false;
        } else {
            for (int i = 2; i * i <= n; i++) {
                if (n % i == 0) {
                    return false;
                }
            }
            return true;
        }
    }
}

class Pair {
    public int x;
    public int y;

    public Pair(int x, int y) {
        this.x = x;
        this.y = y;
    }

    @Override
    public boolean equals(Object o) {
        // System.out.println("inside equals");
        if (o == this) {
            return true;
        } else if (!(o instanceof Pair)) {
            return false;
        } else {
            Pair p = (Pair)o;
            return this.x == p.x && this.y == p.y;
        }
    }

    @Override
    public int hashCode() {
        // System.out.println("inside hashcode");
        return Arrays.hashCode(new int[]{this.x, this.y});
    }

    @Override
    public String toString() {
        return "(" + this.x + ", " + this.y + ")";
    }
}