#include <bits/stdc++.h>
using namespace std;
using ll = long long;

template <typename T>
class BinaryIndexedTree {
    vector<T> data;
    int n;
    //
public:
    BinaryIndexedTree(int n_) : n(n_ + 2), data(n_ + 2, 0) {}
    T sum(int i) {
        T ret(0);
        for (int x = i + 1; x > 0; x -= x & -x)
            ret += data[x];
        return ret;
    }
    void add(int i, T a) {
        for (int x = i + 1; x <= n; x += x & -x) {
            data[x] += a;
        }
    }
    T query(int a, int b) {
        return sum(b) - sum(a - 1);
    }
};

int main() {
    int N, Q;
    cin >> N >> Q;

    BinaryIndexedTree<ll> bit(N * 2 + 1);
    int origin = 0;

    auto rem = [&](int a) {
        return (((a += origin) %= 2 * N) += 2 * N) %= 2 * N;
    };

    auto get = [&](int a, int b) {
        if (a <= b) {
            return bit.query(a, b);
        } else {
            return bit.query(a, N * 2 - 1) + bit.query(0, b);
        }
    };

    while (Q--) {
        char c;
        int t, y, z;
        cin >> c >> t >> y >> z;

        (((origin = -t) %= 2 * N) += 2 * N) %= 2 * N;

        if (c == 'L') {
            bit.add(rem(2 * N - 1 - y), z);
        } else if (c == 'R') {
            bit.add(rem(y), z);
        } else {
            z--;
            cout << get(rem(y), rem(z)) + get(rem(2 * N - 1 - z), rem(2 * N - 1 - y)) << endl;
        }
    }
}