Luogu3948 数据结构

#include <algorithm>
#include <iostream>
#include <cstdlib>
#include <cctype>
#include <cstdio>

using namespace std;

typedef long long ll;
const int MAX_N = 80005;

int n, q, mod, max_val, min_val;
ll dlt[MAX_N];
int pre_sum[MAX_N];

inline int rd() {
    register int x = 0, c = getchar();
    register bool f = false;
    while (!isdigit(c)) {
        f = (c == ‘-‘);
        c = getchar();
    }
    while (isdigit(c)) {
        x = x * 10 + (c ^ 48);
        c = getchar();
    }
    return f ? -x : x;
}

inline int get_c() {
    register int c = getchar();
    while (!isupper(c)) c = getchar();
    return c;
}

inline void query(int l, int r) {
    ll sig = 0ll, tmp, res = 0ll;
    for (int i = 1; i < l; ++i) sig = sig + dlt[i];
    for (int i = l; i <= r; ++i) {
        sig += dlt[i];
        tmp = sig * i % mod;
        res += (min_val <= tmp && tmp <= max_val);
    }
    printf("%lld\n", res);
}

int main() {
    n = rd(); q = rd(); mod = rd(); min_val = rd(); max_val = rd();
    register int opt, lef, rig, val;
    while (q--) {
        opt = get_c();
        if (opt == ‘A‘) {
            lef = rd(); rig = rd(); val = rd();
            dlt[lef] = dlt[lef] + val;
            dlt[rig + 1] = dlt[rig + 1] - val;
        } else {
            lef = rd(); rig = rd();
            query(lef, rig);
        }
    }
    register ll sig = 0ll, tmp;
    for (int i = 1; i <= n; ++i) {
        sig = sig + dlt[i];
        tmp = sig * i % mod;
        pre_sum[i] = pre_sum[i - 1] + (min_val <= tmp && tmp <= max_val);
    }
    q = rd();
    while (q--) {
        lef = rd(); rig = rd();
        printf("%d\n", pre_sum[rig] - pre_sum[lef - 1]);
    }
    return 0;
}