#include <iostream>
#include <vector>
#include <cstdio>

using namespace std;

typedef long long LL;

struct Fish {
    int t, num, pos, heading; // 0:左，1:右
};

int n, q;
vector<Fish> fishes;

int main() {
    // freopen("fish.in", "r", stdin);
    // freopen("fish.out", "w", stdout);

    scanf("%d%d", &n, &q);
    for (int i = 1; i <= q; ++i) {
        int t, y, z;
        char ch;
            scanf(" %c%d%d%d", &ch, &t, &y, &z);
        if (ch == 'L') {
            fishes.push_back({ t, z, y, 0 });
        } else if (ch == 'R') {
            fishes.push_back({ t, z, y, 1 });
        } else {
            LL ans = 0LL;
            for (Fish f : fishes) {
                int left_t = t - f.t, heading = f.heading, pos = f.pos;
                while (left_t-- > 0) {
                    if (heading == 0) {
                        if (pos == 0) heading = 1;
                        else --pos;
                    } else {
                        if (pos == n - 1) heading = 0;
                        else ++pos;
                    }
                }
                if (y <= pos && pos < z) ans += f.num;
            }

            printf("%lld\n", ans);
        }
    }

    return 0;
}