oj.uz

답안 #861702

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
861702 2023-10-16T16:50:31 Z wakandaaa Curtains (NOI23_curtains) C++17
100 / 100
 822 ms 154452 KB 
#include <bits/stdc++.h>

using namespace std;

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1 << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
long long rand(long long l, long long r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = 1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int inf = 1e9; // INT_MAX;
const long long llinf = 1e18; // LLONG_MAX;

template<class X, class Y>
bool minimize(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}

template<class X, class Y>
bool maximize(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}

template<class X, class Y>
bool add(X &a, Y b) {
    a += b;
    while (a >= mod) a -= mod;
    while (a < 0) a += mod;
    return true;
}

struct node {
    int L, R, M, val;
    int lazy = 0;
    node *l, *r;
    
    node (int _L, int _R) : L(_L), R(_R) {
        M = (L + R) >> 1;
        val = 0;
        if (L < R) {
            l = new node(L, M);
            r = new node(M + 1, R);
        }
    }

    void down() {
        l->lazy = max(l->lazy, lazy);
        r->lazy = max(r->lazy, lazy);
        l->val = max(l->val, lazy);
        r->val = max(r->val, lazy);
    }

    void update(int u, int v, int c) {
        if (v < L || u > R) return;
        if (u <= L && R <= v) {
            lazy = max(lazy, c);
            val = max(val, c);
            return;
        }

        down();

        l->update(u, v, c);
        r->update(u, v, c);

        val = min(l->val, r->val);
    }

    int get(int u, int v) {
        if (v < L || u > R)
            return inf;
        if (u <= L && R <= v) 
            return val;

        down();

        return min(l->get(u, v), r->get(u, v));
    }
} *root;

struct SegmentTree {
    int n;
    vector<int> val, lazy;

    void init(int _n) {
        n = _n;
        val.assign(n * 4 + 5, 0);
        lazy.assign(n * 4 + 5, 0);
    }

    void down(int i) {
        for (int j = i * 2; j <= i * 2 + 1; ++j) {
            val[j] = max(val[j], lazy[i]);
            lazy[j] = max(lazy[j], lazy[i]);
        }
    }

    void update(int i, int L, int R, int l, int r, int c) {
        if (r < L || l > R)
            return;
        if (l <= L && R <= r) {
            val[i] = max(val[i], c);
            lazy[i] = max(lazy[i], c);
            return;
        }

        down(i);

        int M = (L + R) >> 1;
        update(i << 1, L, M, l, r, c);
        update(i << 1 | 1, M + 1, R, l, r, c);
        val[i] = min(val[i << 1], val[i << 1 | 1]);
    }

    int get(int i, int L, int R, int l, int r) {
        if (r < L || l > R)
            return inf;
        if (l <= L && R <= r) 
            return val[i];

        down(i);

        int M = (L + R) >> 1;
        return min(get(i << 1, L, M, l, r),
                   get(i << 1 | 1, M + 1, R, l, r));
    }

    void update(int l, int r, int c) {
        update(1, 1, n, l, r, c);
    }
    int get(int l, int r) {
        return get(1, 1, n, l, r);
    }
} t;


int n, m, q;
vector<int> curtain[N];
vector<pair<int, int> > query[N];
int ans[N];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    cin >> n >> m >> q;
    for (int i = 1; i <= m; ++i) {
        int l, r;
        cin >> l >> r;
        curtain[r].push_back(l);
    }

    for (int i = 1; i <= q; ++i) {
        int s, e;
        cin >> s >> e;
        query[e].emplace_back(s, i);
    }

    t.init(n);
    root = new node(1, n);

    for (int r = 1; r <= n; ++ r) {
        for (int l : curtain[r]) {
            // root->update(l, r, l);
            t.update(l, r, l);
        }

        for (auto [l, id] : query[r]) {
            // ans[id] = root->get(l, r) >= l;
            ans[id] = t.get(l, r) >= l;
        }
    }

    for (int i = 1; i <= q; ++i)
        cout << (ans[i] ? "YES" : "NO") << '\n';

    // for (int i = 1; i <= n; ++i)
    //     cout << root->get(i, i) << ' ';

    return 0;
}

/*

*/

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 48984 KB Output is correct
2 Correct 10 ms 48988 KB Output is correct
3 Correct 11 ms 48988 KB Output is correct
4 Correct 12 ms 48988 KB Output is correct
5 Correct 10 ms 48988 KB Output is correct
6 Correct 11 ms 48988 KB Output is correct
7 Correct 11 ms 49332 KB Output is correct
8 Correct 10 ms 48984 KB Output is correct
9 Correct 11 ms 48988 KB Output is correct
10 Correct 10 ms 48988 KB Output is correct
11 Correct 11 ms 49044 KB Output is correct
12 Correct 11 ms 48984 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 48984 KB Output is correct
2 Correct 10 ms 48988 KB Output is correct
3 Correct 11 ms 48988 KB Output is correct
4 Correct 12 ms 48988 KB Output is correct
5 Correct 10 ms 48988 KB Output is correct
6 Correct 11 ms 48988 KB Output is correct
7 Correct 11 ms 49332 KB Output is correct
8 Correct 10 ms 48984 KB Output is correct
9 Correct 11 ms 48988 KB Output is correct
10 Correct 10 ms 48988 KB Output is correct
11 Correct 11 ms 49044 KB Output is correct
12 Correct 11 ms 48984 KB Output is correct
13 Correct 12 ms 49244 KB Output is correct
14 Correct 14 ms 49500 KB Output is correct
15 Correct 15 ms 49496 KB Output is correct
16 Correct 12 ms 49496 KB Output is correct
17 Correct 12 ms 49500 KB Output is correct
18 Correct 14 ms 49568 KB Output is correct
19 Correct 12 ms 49500 KB Output is correct
20 Correct 12 ms 49500 KB Output is correct
21 Correct 12 ms 49500 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 48984 KB Output is correct
2 Correct 10 ms 48988 KB Output is correct
3 Correct 11 ms 48988 KB Output is correct
4 Correct 12 ms 48988 KB Output is correct
5 Correct 10 ms 48988 KB Output is correct
6 Correct 11 ms 48988 KB Output is correct
7 Correct 11 ms 49332 KB Output is correct
8 Correct 10 ms 48984 KB Output is correct
9 Correct 11 ms 48988 KB Output is correct
10 Correct 10 ms 48988 KB Output is correct
11 Correct 11 ms 49044 KB Output is correct
12 Correct 11 ms 48984 KB Output is correct
13 Correct 12 ms 49244 KB Output is correct
14 Correct 14 ms 49500 KB Output is correct
15 Correct 15 ms 49496 KB Output is correct
16 Correct 12 ms 49496 KB Output is correct
17 Correct 12 ms 49500 KB Output is correct
18 Correct 14 ms 49568 KB Output is correct
19 Correct 12 ms 49500 KB Output is correct
20 Correct 12 ms 49500 KB Output is correct
21 Correct 12 ms 49500 KB Output is correct
22 Correct 159 ms 63484 KB Output is correct
23 Correct 163 ms 63928 KB Output is correct
24 Correct 206 ms 65384 KB Output is correct
25 Correct 316 ms 70996 KB Output is correct
26 Correct 163 ms 63588 KB Output is correct
27 Correct 345 ms 70968 KB Output is correct
28 Correct 348 ms 70992 KB Output is correct
29 Correct 153 ms 62572 KB Output is correct
30 Correct 125 ms 62800 KB Output is correct
31 Correct 130 ms 63520 KB Output is correct
32 Correct 289 ms 70104 KB Output is correct
33 Correct 112 ms 62936 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 48984 KB Output is correct
2 Correct 11 ms 48988 KB Output is correct
3 Correct 10 ms 48988 KB Output is correct
4 Correct 12 ms 48984 KB Output is correct
5 Correct 13 ms 49392 KB Output is correct
6 Correct 12 ms 49356 KB Output is correct
7 Correct 12 ms 49496 KB Output is correct
8 Correct 113 ms 62824 KB Output is correct
9 Correct 132 ms 63712 KB Output is correct
10 Correct 276 ms 70084 KB Output is correct
11 Correct 110 ms 62968 KB Output is correct
12 Correct 119 ms 70952 KB Output is correct
13 Correct 116 ms 70996 KB Output is correct
14 Correct 100 ms 70992 KB Output is correct
15 Correct 95 ms 70580 KB Output is correct
16 Correct 98 ms 71072 KB Output is correct
17 Correct 124 ms 70740 KB Output is correct
18 Correct 699 ms 151312 KB Output is correct
19 Correct 742 ms 151064 KB Output is correct
20 Correct 574 ms 152100 KB Output is correct
21 Correct 551 ms 150908 KB Output is correct
22 Correct 590 ms 150280 KB Output is correct

Subtask #5
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 48984 KB Output is correct
2 Correct 10 ms 48988 KB Output is correct
3 Correct 11 ms 48988 KB Output is correct
4 Correct 12 ms 48988 KB Output is correct
5 Correct 10 ms 48988 KB Output is correct
6 Correct 11 ms 48988 KB Output is correct
7 Correct 11 ms 49332 KB Output is correct
8 Correct 10 ms 48984 KB Output is correct
9 Correct 11 ms 48988 KB Output is correct
10 Correct 10 ms 48988 KB Output is correct
11 Correct 11 ms 49044 KB Output is correct
12 Correct 11 ms 48984 KB Output is correct
13 Correct 12 ms 49244 KB Output is correct
14 Correct 14 ms 49500 KB Output is correct
15 Correct 15 ms 49496 KB Output is correct
16 Correct 12 ms 49496 KB Output is correct
17 Correct 12 ms 49500 KB Output is correct
18 Correct 14 ms 49568 KB Output is correct
19 Correct 12 ms 49500 KB Output is correct
20 Correct 12 ms 49500 KB Output is correct
21 Correct 12 ms 49500 KB Output is correct
22 Correct 99 ms 56916 KB Output is correct
23 Correct 92 ms 56772 KB Output is correct
24 Correct 140 ms 70224 KB Output is correct
25 Correct 131 ms 70200 KB Output is correct
26 Correct 119 ms 71508 KB Output is correct
27 Correct 125 ms 71476 KB Output is correct
28 Correct 94 ms 69208 KB Output is correct
29 Correct 112 ms 71004 KB Output is correct
30 Correct 134 ms 70228 KB Output is correct
31 Correct 131 ms 70216 KB Output is correct
32 Correct 119 ms 70628 KB Output is correct
33 Correct 122 ms 71252 KB Output is correct
34 Correct 125 ms 69616 KB Output is correct
35 Correct 128 ms 70036 KB Output is correct
36 Correct 132 ms 70568 KB Output is correct
37 Correct 132 ms 70944 KB Output is correct
38 Correct 117 ms 70992 KB Output is correct
39 Correct 95 ms 70992 KB Output is correct
40 Correct 94 ms 70772 KB Output is correct
41 Correct 98 ms 70996 KB Output is correct
42 Correct 99 ms 70668 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 48984 KB Output is correct
2 Correct 10 ms 48988 KB Output is correct
3 Correct 11 ms 48988 KB Output is correct
4 Correct 12 ms 48988 KB Output is correct
5 Correct 10 ms 48988 KB Output is correct
6 Correct 11 ms 48988 KB Output is correct
7 Correct 11 ms 49332 KB Output is correct
8 Correct 10 ms 48984 KB Output is correct
9 Correct 11 ms 48988 KB Output is correct
10 Correct 10 ms 48988 KB Output is correct
11 Correct 11 ms 49044 KB Output is correct
12 Correct 11 ms 48984 KB Output is correct
13 Correct 12 ms 49244 KB Output is correct
14 Correct 14 ms 49500 KB Output is correct
15 Correct 15 ms 49496 KB Output is correct
16 Correct 12 ms 49496 KB Output is correct
17 Correct 12 ms 49500 KB Output is correct
18 Correct 14 ms 49568 KB Output is correct
19 Correct 12 ms 49500 KB Output is correct
20 Correct 12 ms 49500 KB Output is correct
21 Correct 12 ms 49500 KB Output is correct
22 Correct 159 ms 63484 KB Output is correct
23 Correct 163 ms 63928 KB Output is correct
24 Correct 206 ms 65384 KB Output is correct
25 Correct 316 ms 70996 KB Output is correct
26 Correct 163 ms 63588 KB Output is correct
27 Correct 345 ms 70968 KB Output is correct
28 Correct 348 ms 70992 KB Output is correct
29 Correct 153 ms 62572 KB Output is correct
30 Correct 125 ms 62800 KB Output is correct
31 Correct 130 ms 63520 KB Output is correct
32 Correct 289 ms 70104 KB Output is correct
33 Correct 112 ms 62936 KB Output is correct
34 Correct 11 ms 48984 KB Output is correct
35 Correct 11 ms 48988 KB Output is correct
36 Correct 10 ms 48988 KB Output is correct
37 Correct 12 ms 48984 KB Output is correct
38 Correct 13 ms 49392 KB Output is correct
39 Correct 12 ms 49356 KB Output is correct
40 Correct 12 ms 49496 KB Output is correct
41 Correct 113 ms 62824 KB Output is correct
42 Correct 132 ms 63712 KB Output is correct
43 Correct 276 ms 70084 KB Output is correct
44 Correct 110 ms 62968 KB Output is correct
45 Correct 119 ms 70952 KB Output is correct
46 Correct 116 ms 70996 KB Output is correct
47 Correct 100 ms 70992 KB Output is correct
48 Correct 95 ms 70580 KB Output is correct
49 Correct 98 ms 71072 KB Output is correct
50 Correct 124 ms 70740 KB Output is correct
51 Correct 699 ms 151312 KB Output is correct
52 Correct 742 ms 151064 KB Output is correct
53 Correct 574 ms 152100 KB Output is correct
54 Correct 551 ms 150908 KB Output is correct
55 Correct 590 ms 150280 KB Output is correct
56 Correct 99 ms 56916 KB Output is correct
57 Correct 92 ms 56772 KB Output is correct
58 Correct 140 ms 70224 KB Output is correct
59 Correct 131 ms 70200 KB Output is correct
60 Correct 119 ms 71508 KB Output is correct
61 Correct 125 ms 71476 KB Output is correct
62 Correct 94 ms 69208 KB Output is correct
63 Correct 112 ms 71004 KB Output is correct
64 Correct 134 ms 70228 KB Output is correct
65 Correct 131 ms 70216 KB Output is correct
66 Correct 119 ms 70628 KB Output is correct
67 Correct 122 ms 71252 KB Output is correct
68 Correct 125 ms 69616 KB Output is correct
69 Correct 128 ms 70036 KB Output is correct
70 Correct 132 ms 70568 KB Output is correct
71 Correct 132 ms 70944 KB Output is correct
72 Correct 117 ms 70992 KB Output is correct
73 Correct 95 ms 70992 KB Output is correct
74 Correct 94 ms 70772 KB Output is correct
75 Correct 98 ms 70996 KB Output is correct
76 Correct 99 ms 70668 KB Output is correct
77 Correct 804 ms 147792 KB Output is correct
78 Correct 822 ms 147876 KB Output is correct
79 Correct 682 ms 154452 KB Output is correct
80 Correct 708 ms 154352 KB Output is correct
81 Correct 656 ms 152148 KB Output is correct
82 Correct 668 ms 153432 KB Output is correct
83 Correct 801 ms 147888 KB Output is correct
84 Correct 799 ms 147664 KB Output is correct
85 Correct 746 ms 149328 KB Output is correct
86 Correct 715 ms 145932 KB Output is correct
87 Correct 717 ms 145824 KB Output is correct
88 Correct 678 ms 152208 KB Output is correct