oj.uz

Submission #1102878

# Submission time Handle Problem Language Result Execution time Memory
1102878 2024-10-19T06:47:53 Z blackslex Curtains (NOI23_curtains) C++17
100 / 100
 1016 ms 72776 KB 
#include<bits/stdc++.h>
#define lsb(x) (x &(-x))

using namespace std;
using pii = pair<int, int>;

const int N = 5e5 + 5;
int n, m, q, x, y, segm[N * 4], lz[N * 4];

void push (int l, int r, int idx) {
    segm[idx] = max(segm[idx], lz[idx]);
    if (l < r) {
        lz[idx * 2 + 1] = max(lz[idx * 2 + 1], lz[idx]);
        lz[idx * 2 + 2] = max(lz[idx * 2 + 2], lz[idx]);
    }
    lz[idx] = 0;
}

void upd (int l, int r, int idx, int tl, int tr, int val) {
    push(l, r, idx);
    if (l > tr || r < tl) return;
    if (l >= tl && r <= tr) {
        lz[idx] = max(lz[idx], val);
        push(l, r, idx);
        return;
    }
    int mid = (l + r) >> 1;
    upd(l, mid, idx * 2 + 1, tl, tr, val);
    upd(mid + 1, r, idx * 2 + 2, tl, tr, val);
    segm[idx] = min(segm[idx * 2 + 1], segm[idx * 2 + 2]);
}

int qr (int l, int r, int idx, int tl, int tr) {
    push(l, r, idx);
    if (l > tr || r < tl) return 1e9;
    if (l >= tl && r <= tr) return segm[idx];
    int mid = (l + r) >> 1;
    return min(qr(l, mid, idx * 2 + 1, tl, tr), qr(mid + 1, r, idx * 2 + 2, tl, tr));
}

int main() {
    scanf("%d %d %d", &n, &m, &q);
    vector<vector<int>> add(n + 5, vector<int>());
    vector<vector<pii>> cq(n + 5, vector<pii>());
    vector<int> ans(q);
    for (int i = 0; i < m; i++) {
        scanf("%d %d", &x, &y);
        add[y].emplace_back(x);
    }
    for (int i = 0; i < q; i++) {
        scanf("%d %d", &x, &y);
        cq[y].emplace_back(x, i);
    }
    for (int i = 1; i <= n; i++) {
        for (auto &e: add[i]) upd(1, n, 0, e, i, e);
        for (auto &[x, y]: cq[i]) ans[y] = (qr(1, n, 0, x, i) >= x);
    }
    for (auto &e: ans) printf("%s\n", e ? "YES" : "NO");
}

Compilation message

curtains.cpp: In function 'int main()':
curtains.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     scanf("%d %d %d", &n, &m, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
curtains.cpp:47:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~
curtains.cpp:51:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 336 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 592 KB Output is correct
15 Correct 4 ms 592 KB Output is correct
16 Correct 4 ms 592 KB Output is correct
17 Correct 3 ms 592 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 2 ms 592 KB Output is correct
20 Correct 3 ms 592 KB Output is correct
21 Correct 3 ms 760 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 592 KB Output is correct
15 Correct 4 ms 592 KB Output is correct
16 Correct 4 ms 592 KB Output is correct
17 Correct 3 ms 592 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 2 ms 592 KB Output is correct
20 Correct 3 ms 592 KB Output is correct
21 Correct 3 ms 760 KB Output is correct
22 Correct 214 ms 13780 KB Output is correct
23 Correct 224 ms 13128 KB Output is correct
24 Correct 265 ms 11260 KB Output is correct
25 Correct 404 ms 17992 KB Output is correct
26 Correct 202 ms 10376 KB Output is correct
27 Correct 384 ms 13648 KB Output is correct
28 Correct 387 ms 13384 KB Output is correct
29 Correct 192 ms 11848 KB Output is correct
30 Correct 147 ms 12376 KB Output is correct
31 Correct 155 ms 12992 KB Output is correct
32 Correct 343 ms 13720 KB Output is correct
33 Correct 154 ms 12624 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 3 ms 764 KB Output is correct
8 Correct 144 ms 11984 KB Output is correct
9 Correct 171 ms 11080 KB Output is correct
10 Correct 344 ms 15784 KB Output is correct
11 Correct 163 ms 10824 KB Output is correct
12 Correct 136 ms 12616 KB Output is correct
13 Correct 130 ms 14068 KB Output is correct
14 Correct 89 ms 12836 KB Output is correct
15 Correct 88 ms 12360 KB Output is correct
16 Correct 96 ms 12876 KB Output is correct
17 Correct 103 ms 12472 KB Output is correct
18 Correct 851 ms 60504 KB Output is correct
19 Correct 825 ms 70112 KB Output is correct
20 Correct 606 ms 61260 KB Output is correct
21 Correct 569 ms 60332 KB Output is correct
22 Correct 576 ms 64580 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 592 KB Output is correct
15 Correct 4 ms 592 KB Output is correct
16 Correct 4 ms 592 KB Output is correct
17 Correct 3 ms 592 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 2 ms 592 KB Output is correct
20 Correct 3 ms 592 KB Output is correct
21 Correct 3 ms 760 KB Output is correct
22 Correct 99 ms 3912 KB Output is correct
23 Correct 108 ms 5960 KB Output is correct
24 Correct 132 ms 13864 KB Output is correct
25 Correct 127 ms 11476 KB Output is correct
26 Correct 108 ms 14512 KB Output is correct
27 Correct 115 ms 14408 KB Output is correct
28 Correct 96 ms 12360 KB Output is correct
29 Correct 113 ms 12360 KB Output is correct
30 Correct 131 ms 12748 KB Output is correct
31 Correct 134 ms 13904 KB Output is correct
32 Correct 124 ms 12104 KB Output is correct
33 Correct 117 ms 12424 KB Output is correct
34 Correct 135 ms 11080 KB Output is correct
35 Correct 132 ms 11408 KB Output is correct
36 Correct 128 ms 12104 KB Output is correct
37 Correct 132 ms 12872 KB Output is correct
38 Correct 128 ms 14104 KB Output is correct
39 Correct 102 ms 14152 KB Output is correct
40 Correct 97 ms 13640 KB Output is correct
41 Correct 90 ms 12872 KB Output is correct
42 Correct 112 ms 13640 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 2 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 592 KB Output is correct
15 Correct 4 ms 592 KB Output is correct
16 Correct 4 ms 592 KB Output is correct
17 Correct 3 ms 592 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 2 ms 592 KB Output is correct
20 Correct 3 ms 592 KB Output is correct
21 Correct 3 ms 760 KB Output is correct
22 Correct 214 ms 13780 KB Output is correct
23 Correct 224 ms 13128 KB Output is correct
24 Correct 265 ms 11260 KB Output is correct
25 Correct 404 ms 17992 KB Output is correct
26 Correct 202 ms 10376 KB Output is correct
27 Correct 384 ms 13648 KB Output is correct
28 Correct 387 ms 13384 KB Output is correct
29 Correct 192 ms 11848 KB Output is correct
30 Correct 147 ms 12376 KB Output is correct
31 Correct 155 ms 12992 KB Output is correct
32 Correct 343 ms 13720 KB Output is correct
33 Correct 154 ms 12624 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 1 ms 336 KB Output is correct
37 Correct 1 ms 336 KB Output is correct
38 Correct 2 ms 592 KB Output is correct
39 Correct 3 ms 592 KB Output is correct
40 Correct 3 ms 764 KB Output is correct
41 Correct 144 ms 11984 KB Output is correct
42 Correct 171 ms 11080 KB Output is correct
43 Correct 344 ms 15784 KB Output is correct
44 Correct 163 ms 10824 KB Output is correct
45 Correct 136 ms 12616 KB Output is correct
46 Correct 130 ms 14068 KB Output is correct
47 Correct 89 ms 12836 KB Output is correct
48 Correct 88 ms 12360 KB Output is correct
49 Correct 96 ms 12876 KB Output is correct
50 Correct 103 ms 12472 KB Output is correct
51 Correct 851 ms 60504 KB Output is correct
52 Correct 825 ms 70112 KB Output is correct
53 Correct 606 ms 61260 KB Output is correct
54 Correct 569 ms 60332 KB Output is correct
55 Correct 576 ms 64580 KB Output is correct
56 Correct 99 ms 3912 KB Output is correct
57 Correct 108 ms 5960 KB Output is correct
58 Correct 132 ms 13864 KB Output is correct
59 Correct 127 ms 11476 KB Output is correct
60 Correct 108 ms 14512 KB Output is correct
61 Correct 115 ms 14408 KB Output is correct
62 Correct 96 ms 12360 KB Output is correct
63 Correct 113 ms 12360 KB Output is correct
64 Correct 131 ms 12748 KB Output is correct
65 Correct 134 ms 13904 KB Output is correct
66 Correct 124 ms 12104 KB Output is correct
67 Correct 117 ms 12424 KB Output is correct
68 Correct 135 ms 11080 KB Output is correct
69 Correct 132 ms 11408 KB Output is correct
70 Correct 128 ms 12104 KB Output is correct
71 Correct 132 ms 12872 KB Output is correct
72 Correct 128 ms 14104 KB Output is correct
73 Correct 102 ms 14152 KB Output is correct
74 Correct 97 ms 13640 KB Output is correct
75 Correct 90 ms 12872 KB Output is correct
76 Correct 112 ms 13640 KB Output is correct
77 Correct 1004 ms 61480 KB Output is correct
78 Correct 999 ms 54600 KB Output is correct
79 Correct 814 ms 72776 KB Output is correct
80 Correct 720 ms 61512 KB Output is correct
81 Correct 732 ms 65864 KB Output is correct
82 Correct 746 ms 71744 KB Output is correct
83 Correct 951 ms 54708 KB Output is correct
84 Correct 1016 ms 61512 KB Output is correct
85 Correct 896 ms 63236 KB Output is correct
86 Correct 880 ms 52868 KB Output is correct
87 Correct 913 ms 53288 KB Output is correct
88 Correct 866 ms 59208 KB Output is correct