oj.uz

답안 #869950

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
869950 2023-11-06T12:00:55 Z overwatch9 Examination (JOI19_examination) C++17
2 / 100
 168 ms 287692 KB 
#include <iostream>
#include <vector>
#include <array>
#include <map>
using namespace std;
using ll = long long;
int n, q;
vector <pair <ll, ll>> ppl;
vector <array <ll, 3>> queries;
struct stree {
    #define lc v*2
    #define rc v*2+1
    vector <map <int, ll>> tree;
    vector <vector <pair <ll, ll>>> tree_pfx;
    stree (int s) {
        tree.resize(s*4);
        tree_pfx.resize(s*4);
    }
    void pushup(int v, int val) {
        tree[v][val]++;
    }
    void update(int v, int tl, int tr, int p, ll val) {
        if (tl > p || tr < p)
            return;
        if (tl == tr) {
            tree[v][val]++;
            return;
        }
        int tm = (tl + tr) / 2;
        update(lc, tl, tm, p, val);
        update(rc, tm+1, tr, p, val);
        pushup(v, val);
    }
    void build_pfx(int v, int tl, int tr) {
        int p = 0;
        tree_pfx[v].resize(tree[v].size());
        for (auto i : tree[v]) {
            tree_pfx[v][p] = i;
            if (p-1 >= 0)
                tree_pfx[v][p].second += tree_pfx[v][p-1].second;
            p++;
        }
        if (tl == tr)
            return;
        int tm = (tl + tr) / 2;
        build_pfx(lc, tl, tm);
        build_pfx(rc, tm+1, tr);
    }
    int query(int v, int tl, int tr, int l, int r, int val) {
        if (tl > r || tr < l)
            return 0;
        if (tl >= l && tr <= r) {
            if (tree_pfx[v].empty())
                return 0;
            pair <ll, ll> tp = {val, 0};
            auto x = lower_bound(tree_pfx[v].begin(), tree_pfx[v].end(), tp) - tree_pfx[v].begin();
            if (x == 0)
                return tree_pfx[v].back().second;
            else
                return tree_pfx[v].back().second - tree_pfx[v][x-1].second;
        }
        int tm = (tl + tr) / 2;
        int a = query(lc, tl, tm, l, r, val);
        int b = query(rc, tm+1, tr, l, r, val);
        return a + b;
    }
};
void subtask1() {
    for (int i = 0; i < q; i++) {
        int ans = 0;
        ll a = queries[i][0], b = queries[i][1], c = queries[i][2];
        for (int j = 0; j < n; j++) {
            if (ppl[j].first + ppl[j].second >= c && ppl[j].first >= a && ppl[j].second >= b)
                ans++;
        }
        cout << ans << '\n';
    }
}
stree tree(1e6 + 51);
void subtask2() {
    int sz = 1e6 + 50;
    for (int i = 0; i < n; i++) {
        // tree.update(1, 0, sz, ppl[i].first, ppl[i].second);
    }
    // tree.build_pfx(1, 0, sz);
    for (int i = 0; i < q; i++) {
        cout << tree.query(1, 0, sz, queries[i][0], sz, queries[i][1]) << '\n';
    }
}
int main() {
    cin >> n >> q;
    ppl.resize(n);
    queries.resize(q);
    for (int i = 0; i < n; i++)
        cin >> ppl[i].first >> ppl[i].second;
    for (int i = 0; i < q; i++)
        cin >> queries[i][0] >> queries[i][1] >> queries[i][2];
    if (n <= 3000 && q <= 3000)
        subtask1();
    else
        subtask2();
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 282308 KB Output is correct
2 Correct 59 ms 282196 KB Output is correct
3 Correct 59 ms 282200 KB Output is correct
4 Correct 62 ms 282208 KB Output is correct
5 Correct 58 ms 282192 KB Output is correct
6 Correct 59 ms 282192 KB Output is correct
7 Correct 85 ms 282452 KB Output is correct
8 Correct 85 ms 282452 KB Output is correct
9 Correct 87 ms 282408 KB Output is correct
10 Correct 84 ms 282452 KB Output is correct
11 Correct 88 ms 282452 KB Output is correct
12 Correct 84 ms 282212 KB Output is correct
13 Correct 86 ms 282488 KB Output is correct
14 Correct 84 ms 282460 KB Output is correct
15 Correct 93 ms 282492 KB Output is correct
16 Correct 80 ms 282200 KB Output is correct
17 Correct 79 ms 282448 KB Output is correct
18 Correct 66 ms 282196 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 168 ms 287692 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 168 ms 287692 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 282308 KB Output is correct
2 Correct 59 ms 282196 KB Output is correct
3 Correct 59 ms 282200 KB Output is correct
4 Correct 62 ms 282208 KB Output is correct
5 Correct 58 ms 282192 KB Output is correct
6 Correct 59 ms 282192 KB Output is correct
7 Correct 85 ms 282452 KB Output is correct
8 Correct 85 ms 282452 KB Output is correct
9 Correct 87 ms 282408 KB Output is correct
10 Correct 84 ms 282452 KB Output is correct
11 Correct 88 ms 282452 KB Output is correct
12 Correct 84 ms 282212 KB Output is correct
13 Correct 86 ms 282488 KB Output is correct
14 Correct 84 ms 282460 KB Output is correct
15 Correct 93 ms 282492 KB Output is correct
16 Correct 80 ms 282200 KB Output is correct
17 Correct 79 ms 282448 KB Output is correct
18 Correct 66 ms 282196 KB Output is correct
19 Incorrect 168 ms 287692 KB Output isn't correct
20 Halted 0 ms 0 KB -