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

public class greetings {
	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(new File("greetings.in"));
		int BJour = in.nextInt();
		int EJour = in.nextInt();

		//Deal with Bessie first

		String[] BDirect = new String[BJour+1];
		int[] BCurrPosition = new int[50000];
		BCurrPosition[0] = 0;

		for(int i=1; i<=BJour; i++) { //fill in info for Bessie
			int BTime = in.nextInt(); //time unit for each fragment
			BDirect[i] = in.nextLine(); //direction for each fragment
			for(int j=1; j<=BTime; j++) {
				if(BDirect[i]=="R") { //Right is positive and Left is negative
					BCurrPosition[i] = BCurrPosition[0] + 1;
				} else if(BDirect[i]=="L") {
					BCurrPosition[i] = BCurrPosition[0] - 1;
				} else {
					BCurrPosition[i] = BCurrPosition[0] + 0;
				}
			}
		}

		//Then Elsie

		String[] EDirect = new String[BJour+1];
		int[] ECurrPosition = new int[50000];
		ECurrPosition[0] = 0;

		for(int i=1; i<=EJour; i++) { //fill in info for Elsie
			int ETime = in.nextInt(); //time unit for each fragment
			EDirect[i] = in.nextLine(); //direction for each fragment
			for(int j=1; j<=ETime; j++) {
				if(EDirect[i]=="R") { //Right is positive and Left is negative
					ECurrPosition[i] = ECurrPosition[0] + 1;
				} else if(EDirect[i]=="L") {
					ECurrPosition[i] = ECurrPosition[0] -1;
				} else {
					ECurrPosition[i] = ECurrPosition[0] + 0;
				}
			}
		}

		//Comparison

		int result = 0;
		for(int i=1; i <= 50000; i++) {
			if(BCurrPosition[i] == ECurrPosition[i]) {
				result += 1;
			}
		}

		PrintWriter out = new PrintWriter(new File("greetings.out"));
		System.out.println(result);
		out.println(result);
		in.close();
		out.close();
	}
}

/*

public class greetings {

}

*/