Submission #1327373

#TimeUsernameProblemLanguageResultExecution timeMemory
1327373retardeInspections (NOI23_inspections)C++20
11 / 100
2098 ms156620 KiB
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define pf push_front
#define mp make_pair
#define fi first
#define se second
#define int long long
#define all(x) (x).begin(), (x).end()

typedef long double ld;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<bool>> vvb;
typedef vector<vector<ll>> vvll;
typedef vector<string> vs;
typedef vector<vector<string>> vvs;
typedef vector<char> vc;
typedef vector<vector<char>> vvc;
typedef map<int, int> mii;
typedef unordered_map<int, int> umii;

const int mod = 1e9 + 7;
const int inf = INTMAX_MAX;
const bool tc = false;

struct SparseSegtree {
    struct Node {
        int sum = 0;
        int lazy = 0;
        Node* l = nullptr;
        Node* r = nullptr;
    };

    const int LO = 0;
    const int HI = (int)1e14;

    Node* root;

    SparseSegtree() { root = new Node(); }

    inline void apply(Node* n, int s, int e, int add) {
        n->sum += add * (e - s + 1);
        n->lazy += add;
    }

    inline void push(Node* n, int s, int e) {
        if (!n || n->lazy == 0 || s == e) return;
        int m = (s + e) >> 1;

        if (!n->l) n->l = new Node();
        if (!n->r) n->r = new Node();

        apply(n->l, s, m, n->lazy);
        apply(n->r, m + 1, e, n->lazy);
        n->lazy = 0;
    }

    void range_add(Node* n, int s, int e, int l, int r, int val) {
        if (!n || r < s || e < l) return;

        if (l <= s && e <= r) {
            apply(n, s, e, val);
            return;
        }

        push(n, s, e);
        int m = (s + e) >> 1;

        if (!n->l) n->l = new Node();
        if (!n->r) n->r = new Node();

        range_add(n->l, s, m, l, r, val);
        range_add(n->r, m + 1, e, l, r, val);

        n->sum = (n->l ? n->l->sum : 0) + (n->r ? n->r->sum : 0);
    }

    int range_sum(Node* n, int s, int e, int l, int r) {
        if (!n || r < s || e < l) return 0;

        if (l <= s && e <= r) return n->sum;

        push(n, s, e);
        int m = (s + e) >> 1;

        return range_sum(n->l, s, m, l, r)
             + range_sum(n->r, m + 1, e, l, r);
    }

    inline void add(int l, int r, int val) {
        if (l > r) return;
        l = max(l, LO);
        r = min(r, HI);
        if (l > r) return;
        range_add(root, LO, HI, l, r, val);
    }

    inline int sum(int l, int r) {
        if (l > r) return 0;
        l = max(l, LO);
        r = min(r, HI);
        if (l > r) return 0;
        return range_sum(root, LO, HI, l, r);
    }
};

struct Segtree {
    int n;
    vector<int> sum;
    vector<int> lazy;
    vector<char> has;

    Segtree(int _n) : n(_n) {
        sum.assign(4 * n, 0);
        lazy.assign(4 * n, 0);
        has.assign(4 * n, 0);
        build(1, 0, n - 1);
    }

    void build(int i, int l, int r) {
        if (l == r) { sum[i] = 1; return; }
        int m = (l + r) >> 1;
        build(i << 1, l, m);
        build(i << 1 | 1, m + 1, r);
        sum[i] = sum[i << 1] + sum[i << 1 | 1];
    }

    inline void apply(int i, int l, int r, int v) {
        sum[i] = v * (r - l + 1);
        lazy[i] = v;
        has[i] = 1;
    }

    inline void push(int i, int l, int r) {
        if (!has[i] || l == r) return;
        int m = (l + r) >> 1;
        apply(i << 1, l, m, lazy[i]);
        apply(i << 1 | 1, m + 1, r, lazy[i]);
        has[i] = 0;
    }

    void range_set(int ql, int qr, int v) { range_set(1, 0, n - 1, ql, qr, v); }

    void range_set(int i, int l, int r, int ql, int qr, int v) {
        if (qr < l || r < ql) return;
        if (ql <= l && r <= qr) { apply(i, l, r, v); return; }
        push(i, l, r);
        int m = (l + r) >> 1;
        range_set(i << 1, l, m, ql, qr, v);
        range_set(i << 1 | 1, m + 1, r, ql, qr, v);
        sum[i] = sum[i << 1] + sum[i << 1 | 1];
    }

    int range_sum(int ql, int qr) { return range_sum(1, 0, n - 1, ql, qr); }

    int range_sum(pii q) {
        return range_sum(q.fi, q.se);
    }

    int range_sum(int i, int l, int r, int ql, int qr) {
        if (qr < l || r < ql) return 0;
        if (ql <= l && r <= qr) return sum[i];
        push(i, l, r);
        int m = (l + r) >> 1;
        return range_sum(i << 1, l, m, ql, qr) + range_sum(i << 1 | 1, m + 1, r, ql, qr);
    }
};

inline void solve() {
    int n, m, q; cin >> n >> m >> q;
    vector<pii> pairs(m); for (int i = 0; i < m; i++) {
        cin >> pairs[i].fi >> pairs[i].se;
        pairs[i].fi--; pairs[i].se--;
    }

    SparseSegtree sparse;
    Segtree uni(n);
    for (int r = m - 1; r >= 0; r--) {
        uni.range_set(0, n - 1, 0);
        uni.range_set(pairs[r].fi, pairs[r].se, 1);
        int gapsum = 0;
        for (int l = r - 1; l >= 0; l--) {
            int intersection = uni.range_sum(pairs[l]);
            int bonus = pairs[l].se - pairs[r].fi;

            // cout << l + 1 << '\n';
            // cout << pairs[l].fi + 1 << " " << pairs[l].se + 1 << '\n';
            // cout << r + 1 << '\n';
            // cout << pairs[r].fi + 1 << " " << pairs[r].se + 1 << '\n';

            // add intersection at (gapsum + bonus)
            sparse.add(gapsum + bonus, gapsum + bonus, intersection);
            gapsum += pairs[l].se - pairs[l].fi + 1;
            uni.range_set(pairs[l].fi, pairs[l].se, 0);
            // cout << '\n';
        }
    }
    
    while (q--) {
        int x; cin >> x;
        cout << sparse.sum(x, 1e14) << ' ';
    }
    cout << '\n';
}

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

signed main() {
    ios::sync_with_stdio(false);
    cout.tie(0);
    cin.tie(0);
    //setIO();

    int t = 1;
    if (tc) {
        cin >> t;
    }

    while (t--) {
        solve();
    }
}

Compilation message (stderr)

Main.cpp: In function 'void setIO(std::string)':
Main.cpp:214:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  214 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:215:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  215 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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