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답안 #537925

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
537925 2022-03-15T21:56:08 Z davi_bart Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 703 ms 60296 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define fi first
#define se second
#define ld long double
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int N, Q;
vector<array<int, 2> > v;
struct segment {
    const int dim = 1 << 19;
    struct node {
        int val, prop;
        node(int a = -1, int b = -1) {
            val = a;
            prop = b;
        }
    };
    vector<node> s = vector<node>(2 * dim);
    void prop(int pos) {
        if (pos >= dim || s[pos].prop == -1) return;
        s[2 * pos].val = s[pos].prop;
        s[2 * pos].prop = s[pos].prop;

        s[2 * pos + 1].val = s[pos].prop;
        s[2 * pos + 1].prop = s[pos].prop;
    }
    void upd(int pos, int l, int r, int a, int b, int k) {
        prop(pos);
        if (r < a || l > b) return;
        if (a <= l && r <= b) {
            s[pos].val = k;
            s[pos].prop = k;
            return;
        }
        int m = (l + r) / 2;
        upd(2 * pos, l, m, a, b, k);
        upd(2 * pos + 1, m + 1, r, a, b, k);
        s[pos].val = max(s[2 * pos].val, s[2 * pos + 1].val);
        s[pos].prop = -1;
    }

    int query(int pos, int l, int r, int a, int b) {
        prop(pos);
        if (r < a || l > b) return -1;
        if (a <= l && r <= b) return s[pos].val;
        int m = (l + r) / 2;
        return max(query(2 * pos, l, m, a, b), query(2 * pos + 1, m + 1, r, a, b));
    }
    void upd(int a, int b, int k) {
        upd(1, 0, dim - 1, a, b, k);
    }
    int query(int a, int b) {
        return query(1, 0, dim - 1, a, b);
    }
} seg;
int r[20][200010];
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> N;
    vector<int> x;
    for (int i = 0; i < N; i++) {
        int a, b;
        cin >> a >> b;
        v.pb({a, b});
        x.pb(a);
        x.pb(b);
    }
    sort(x.begin(), x.end());
    x.resize(unique(x.begin(), x.end()) - x.begin());
    for (int i = 0; i < N; i++) {
        v[i][0] = lower_bound(x.begin(), x.end(), v[i][0]) - x.begin();
        v[i][1] = lower_bound(x.begin(), x.end(), v[i][1]) - x.begin();
    }
    for (int i = 0; i < N; i++) {
        r[0][i] = seg.query(v[i][0], v[i][1]);
        seg.upd(v[i][0], v[i][1], i);
        if (i) r[0][i] = max(r[0][i], r[0][i - 1]);
    }
    for (int i = 1; i < 19; i++) {
        for (int j = 0; j < N; j++) {
            if (r[i - 1][j] == -1)
                r[i][j] = -1;
            else
                r[i][j] = r[i - 1][r[i - 1][j]];
        }
    }

    cin >> Q;
    for (int i = 0; i < Q; i++) {
        int a, b;
        cin >> a >> b;
        a--;
        b--;
        int tot = 1;
        int pos = b;
        int q = 18;
        while (q >= 0) {
            if (r[q][pos] >= a) {
                tot += (1 << q);
                pos = r[q][pos];
            }
            q--;
        }
        cout << tot << '\n';
    }
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 392 ms 51372 KB Output is correct
2 Correct 392 ms 50900 KB Output is correct
3 Correct 394 ms 50912 KB Output is correct
4 Correct 395 ms 51572 KB Output is correct
5 Correct 411 ms 52808 KB Output is correct
6 Correct 110 ms 49560 KB Output is correct
7 Correct 116 ms 50156 KB Output is correct
8 Correct 117 ms 50492 KB Output is correct
9 Correct 120 ms 51356 KB Output is correct
10 Correct 120 ms 50216 KB Output is correct
11 Correct 247 ms 52188 KB Output is correct
12 Correct 224 ms 50084 KB Output is correct
13 Correct 217 ms 49928 KB Output is correct
14 Correct 245 ms 52176 KB Output is correct
15 Correct 229 ms 51260 KB Output is correct
16 Correct 7 ms 16852 KB Output is correct
17 Correct 111 ms 51824 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 17876 KB Output is correct
2 Correct 16 ms 17876 KB Output is correct
3 Correct 16 ms 17840 KB Output is correct
4 Correct 16 ms 17876 KB Output is correct
5 Correct 16 ms 17748 KB Output is correct
6 Correct 12 ms 17852 KB Output is correct
7 Correct 12 ms 17836 KB Output is correct
8 Correct 13 ms 17824 KB Output is correct
9 Correct 11 ms 17868 KB Output is correct
10 Correct 12 ms 17888 KB Output is correct
11 Correct 13 ms 17876 KB Output is correct
12 Correct 12 ms 17776 KB Output is correct
13 Correct 12 ms 17852 KB Output is correct
14 Correct 13 ms 17876 KB Output is correct
15 Correct 16 ms 17824 KB Output is correct
16 Correct 7 ms 16852 KB Output is correct
17 Correct 11 ms 17876 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 17876 KB Output is correct
2 Correct 16 ms 17876 KB Output is correct
3 Correct 16 ms 17840 KB Output is correct
4 Correct 16 ms 17876 KB Output is correct
5 Correct 16 ms 17748 KB Output is correct
6 Correct 12 ms 17852 KB Output is correct
7 Correct 12 ms 17836 KB Output is correct
8 Correct 13 ms 17824 KB Output is correct
9 Correct 11 ms 17868 KB Output is correct
10 Correct 12 ms 17888 KB Output is correct
11 Correct 13 ms 17876 KB Output is correct
12 Correct 12 ms 17776 KB Output is correct
13 Correct 12 ms 17852 KB Output is correct
14 Correct 13 ms 17876 KB Output is correct
15 Correct 16 ms 17824 KB Output is correct
16 Correct 7 ms 16852 KB Output is correct
17 Correct 11 ms 17876 KB Output is correct
18 Correct 92 ms 18740 KB Output is correct
19 Correct 74 ms 18764 KB Output is correct
20 Correct 91 ms 18804 KB Output is correct
21 Correct 75 ms 18620 KB Output is correct
22 Correct 81 ms 18644 KB Output is correct
23 Correct 69 ms 18680 KB Output is correct
24 Correct 77 ms 18852 KB Output is correct
25 Correct 75 ms 18640 KB Output is correct
26 Correct 71 ms 18672 KB Output is correct
27 Correct 68 ms 18500 KB Output is correct
28 Correct 51 ms 18236 KB Output is correct
29 Correct 53 ms 18216 KB Output is correct
30 Correct 54 ms 18192 KB Output is correct
31 Correct 54 ms 18204 KB Output is correct
32 Correct 53 ms 18224 KB Output is correct
33 Correct 7 ms 16852 KB Output is correct
34 Correct 55 ms 19020 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 417 ms 52888 KB Output is correct
2 Correct 411 ms 52260 KB Output is correct
3 Correct 378 ms 49812 KB Output is correct
4 Correct 374 ms 49628 KB Output is correct
5 Correct 386 ms 50448 KB Output is correct
6 Correct 110 ms 49828 KB Output is correct
7 Correct 112 ms 49548 KB Output is correct
8 Correct 120 ms 49928 KB Output is correct
9 Correct 114 ms 49512 KB Output is correct
10 Correct 140 ms 52220 KB Output is correct
11 Correct 234 ms 49700 KB Output is correct
12 Correct 244 ms 52900 KB Output is correct
13 Correct 229 ms 49720 KB Output is correct
14 Correct 239 ms 50792 KB Output is correct
15 Correct 244 ms 52780 KB Output is correct
16 Correct 8 ms 16852 KB Output is correct
17 Correct 106 ms 50376 KB Output is correct

Subtask #5
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 392 ms 51372 KB Output is correct
2 Correct 392 ms 50900 KB Output is correct
3 Correct 394 ms 50912 KB Output is correct
4 Correct 395 ms 51572 KB Output is correct
5 Correct 411 ms 52808 KB Output is correct
6 Correct 110 ms 49560 KB Output is correct
7 Correct 116 ms 50156 KB Output is correct
8 Correct 117 ms 50492 KB Output is correct
9 Correct 120 ms 51356 KB Output is correct
10 Correct 120 ms 50216 KB Output is correct
11 Correct 247 ms 52188 KB Output is correct
12 Correct 224 ms 50084 KB Output is correct
13 Correct 217 ms 49928 KB Output is correct
14 Correct 245 ms 52176 KB Output is correct
15 Correct 229 ms 51260 KB Output is correct
16 Correct 7 ms 16852 KB Output is correct
17 Correct 111 ms 51824 KB Output is correct
18 Correct 17 ms 17876 KB Output is correct
19 Correct 16 ms 17876 KB Output is correct
20 Correct 16 ms 17840 KB Output is correct
21 Correct 16 ms 17876 KB Output is correct
22 Correct 16 ms 17748 KB Output is correct
23 Correct 12 ms 17852 KB Output is correct
24 Correct 12 ms 17836 KB Output is correct
25 Correct 13 ms 17824 KB Output is correct
26 Correct 11 ms 17868 KB Output is correct
27 Correct 12 ms 17888 KB Output is correct
28 Correct 13 ms 17876 KB Output is correct
29 Correct 12 ms 17776 KB Output is correct
30 Correct 12 ms 17852 KB Output is correct
31 Correct 13 ms 17876 KB Output is correct
32 Correct 16 ms 17824 KB Output is correct
33 Correct 7 ms 16852 KB Output is correct
34 Correct 11 ms 17876 KB Output is correct
35 Correct 92 ms 18740 KB Output is correct
36 Correct 74 ms 18764 KB Output is correct
37 Correct 91 ms 18804 KB Output is correct
38 Correct 75 ms 18620 KB Output is correct
39 Correct 81 ms 18644 KB Output is correct
40 Correct 69 ms 18680 KB Output is correct
41 Correct 77 ms 18852 KB Output is correct
42 Correct 75 ms 18640 KB Output is correct
43 Correct 71 ms 18672 KB Output is correct
44 Correct 68 ms 18500 KB Output is correct
45 Correct 51 ms 18236 KB Output is correct
46 Correct 53 ms 18216 KB Output is correct
47 Correct 54 ms 18192 KB Output is correct
48 Correct 54 ms 18204 KB Output is correct
49 Correct 53 ms 18224 KB Output is correct
50 Correct 7 ms 16852 KB Output is correct
51 Correct 55 ms 19020 KB Output is correct
52 Correct 417 ms 52888 KB Output is correct
53 Correct 411 ms 52260 KB Output is correct
54 Correct 378 ms 49812 KB Output is correct
55 Correct 374 ms 49628 KB Output is correct
56 Correct 386 ms 50448 KB Output is correct
57 Correct 110 ms 49828 KB Output is correct
58 Correct 112 ms 49548 KB Output is correct
59 Correct 120 ms 49928 KB Output is correct
60 Correct 114 ms 49512 KB Output is correct
61 Correct 140 ms 52220 KB Output is correct
62 Correct 234 ms 49700 KB Output is correct
63 Correct 244 ms 52900 KB Output is correct
64 Correct 229 ms 49720 KB Output is correct
65 Correct 239 ms 50792 KB Output is correct
66 Correct 244 ms 52780 KB Output is correct
67 Correct 8 ms 16852 KB Output is correct
68 Correct 106 ms 50376 KB Output is correct
69 Correct 690 ms 57576 KB Output is correct
70 Correct 703 ms 59728 KB Output is correct
71 Correct 682 ms 56496 KB Output is correct
72 Correct 688 ms 58468 KB Output is correct
73 Correct 697 ms 57896 KB Output is correct
74 Correct 454 ms 60024 KB Output is correct
75 Correct 401 ms 57140 KB Output is correct
76 Correct 402 ms 60296 KB Output is correct
77 Correct 389 ms 56860 KB Output is correct
78 Correct 402 ms 57560 KB Output is correct
79 Correct 341 ms 58876 KB Output is correct
80 Correct 315 ms 55788 KB Output is correct
81 Correct 317 ms 55572 KB Output is correct
82 Correct 336 ms 57780 KB Output is correct
83 Correct 319 ms 55920 KB Output is correct
84 Correct 7 ms 16852 KB Output is correct
85 Correct 167 ms 56932 KB Output is correct