import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.PriorityQueue;
public class Main {
	public static void main(String[] args) throws NumberFormatException, IOException{
		ContestScanner in = new ContestScanner();
		int n = in.nextInt();
		int q = in.nextInt();
		int n2 = n<<1;
		List<Val> a = new ArrayList<Val>();
		for(int i=0; i<n2; i++){
			a.add(new Val(0));
		}
		for(int i=0; i<q; i++){
			char x = in.nextToken().charAt(0);
			int y = in.nextInt();
			long z = in.nextInt();
			if(x == 'R'){
				Val v = a.get(y);
				v.val += z;
			}else if(x == 'L'){
				Val v = a.get(n2-y-1);
				v.val += z;
			}else{
				int count = 0;
				for(int j=y; j<z; j++){
					count += a.get(j).val + a.get(n2-j-1).val;
				}

				System.out.println(count);
			}
			Val v = a.remove(n2-1);
			a.add(0, v);
		}
	}
}
class Val{
	long val;
	public Val(int a){
		val = a;
	}
}

class MyComp implements Comparator<int[]>{
	public int compare(int[] a, int[] b) {
		return a[0] - b[0];
	}
}

class Reverse implements Comparator<Integer>{
	public int compare(Integer arg0, Integer arg1) {
		return arg1 - arg0;
	}
}

class Node{
	int id;
	List<Node> edge = new ArrayList<Node>();
	public Node(int id){
		this.id = id;
	}
	public void createEdge(Node node){
		edge.add(node);
	}
}

class ContestScanner{
	private BufferedReader reader;
	private String[] line;
	private int idx;
	public ContestScanner() throws FileNotFoundException{
		reader = new BufferedReader(new InputStreamReader(System.in));
	}

	public ContestScanner(String filename) throws FileNotFoundException{
		reader = new BufferedReader(new InputStreamReader(new FileInputStream(filename)));
	}
	
	public String nextToken() throws IOException{
		if(line == null || line.length <= idx){
			line = reader.readLine().trim().split(" ");
			idx = 0;
		}
		return line[idx++];
	}
	public long nextLong() throws IOException, NumberFormatException{
		return Long.parseLong(nextToken());
	}
	public int nextInt() throws NumberFormatException, IOException{
		return (int)nextLong();
	}
	public double nextDouble() throws NumberFormatException, IOException{
		return Double.parseDouble(nextToken());
	}
}