oj.uz

Submission #828153

# Submission time Handle Problem Language Result Execution time Memory
828153 2023-08-17T06:06:02 Z 박상훈(#10381) Curtains (NOI23_curtains) C++17
100 / 100
 862 ms 43292 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

constexpr int INF = 1e9 + 100;

struct Seg{
	int tree[1101000], lazy[1101000];

	void propagate(int i, int l, int r){
		tree[i] = max(tree[i], lazy[i]);
		if (l!=r){
			lazy[i<<1] = max(lazy[i<<1], lazy[i]);
			lazy[i<<1|1] = max(lazy[i<<1|1], lazy[i]);
		}

		lazy[i] = 0;
	}

	void update(int i, int l, int r, int s, int e, int x){
		propagate(i, l, r);
		if (r<s || e<l) return;
		if (s<=l && r<=e){
			lazy[i] = max(lazy[i], x);
			propagate(i, l, r);
			return;
		}

		int m = (l+r)>>1;
		update(i<<1, l, m, s, e, x); update(i<<1|1, m+1, r, s, e, x);
		tree[i] = min(tree[i<<1], tree[i<<1|1]);
	}

	int query(int i, int l, int r, int s, int e){
		propagate(i, l, r);
		if (r<s || e<l) return INF;
		if (s<=l && r<=e) return tree[i];

		int m = (l+r)>>1;
		return min(query(i<<1, l, m, s, e), query(i<<1|1, m+1, r, s, e));
	}
}tree;

int L[500500], R[500500], S[500500], E[500500], ans[500500];

int main(){
	int n, m, q;
	scanf("%d %d %d", &n, &m, &q);

	vector<array<int, 3>> Ev;

	for (int i=1;i<=m;i++){
		scanf("%d %d", L+i, R+i);
		Ev.push_back({R[i], 0, i});
	}

	for (int i=1;i<=q;i++){
		scanf("%d %d", S+i, E+i);
		Ev.push_back({E[i], 1, i});
	}

	sort(Ev.begin(), Ev.end());

	for (auto &[x, typ, i]:Ev){
		if (typ==0){
			tree.update(1, 1, n, L[i], R[i], L[i]);
			// printf(" update %d %d\n", L[i], R[i]);
			// for (int i=1;i<=n;i++) printf(" %d", tree.query(1, 1, n, i, i));
			// printf("\n");
		}

		else{
			// printf("%d %d -> %d\n", S[i], E[i], tree.query(1, 1, n, S[i], E[i]));
			ans[i] = (tree.query(1, 1, n, S[i], E[i]) == S[i]);
		}
	}

	for (int i=1;i<=q;i++){
		if (ans[i]) printf("YES\n");
		else printf("NO\n");
	}
}

Compilation message

curtains.cpp: In function 'int main()':
curtains.cpp:49:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |  scanf("%d %d %d", &n, &m, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
curtains.cpp:54:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   scanf("%d %d", L+i, R+i);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~
curtains.cpp:59:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |   scanf("%d %d", S+i, E+i);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 452 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 528 KB Output is correct
21 Correct 2 ms 468 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 452 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 528 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 246 ms 17488 KB Output is correct
23 Correct 258 ms 17888 KB Output is correct
24 Correct 307 ms 20512 KB Output is correct
25 Correct 535 ms 31628 KB Output is correct
26 Correct 252 ms 17812 KB Output is correct
27 Correct 538 ms 31732 KB Output is correct
28 Correct 549 ms 32116 KB Output is correct
29 Correct 244 ms 17492 KB Output is correct
30 Correct 194 ms 16888 KB Output is correct
31 Correct 221 ms 19884 KB Output is correct
32 Correct 520 ms 30660 KB Output is correct
33 Correct 189 ms 17256 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 2 ms 440 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 2 ms 448 KB Output is correct
8 Correct 191 ms 16908 KB Output is correct
9 Correct 227 ms 19888 KB Output is correct
10 Correct 485 ms 30628 KB Output is correct
11 Correct 204 ms 16944 KB Output is correct
12 Correct 111 ms 8884 KB Output is correct
13 Correct 111 ms 8816 KB Output is correct
14 Correct 91 ms 8704 KB Output is correct
15 Correct 98 ms 8744 KB Output is correct
16 Correct 96 ms 8764 KB Output is correct
17 Correct 93 ms 8700 KB Output is correct
18 Correct 687 ms 41108 KB Output is correct
19 Correct 712 ms 39688 KB Output is correct
20 Correct 532 ms 40904 KB Output is correct
21 Correct 529 ms 39704 KB Output is correct
22 Correct 547 ms 39644 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 452 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 528 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 123 ms 7076 KB Output is correct
23 Correct 112 ms 7192 KB Output is correct
24 Correct 129 ms 8872 KB Output is correct
25 Correct 129 ms 9220 KB Output is correct
26 Correct 110 ms 9040 KB Output is correct
27 Correct 111 ms 8952 KB Output is correct
28 Correct 84 ms 7736 KB Output is correct
29 Correct 103 ms 8776 KB Output is correct
30 Correct 156 ms 9276 KB Output is correct
31 Correct 129 ms 9176 KB Output is correct
32 Correct 124 ms 9104 KB Output is correct
33 Correct 108 ms 9320 KB Output is correct
34 Correct 139 ms 9004 KB Output is correct
35 Correct 129 ms 8684 KB Output is correct
36 Correct 117 ms 9012 KB Output is correct
37 Correct 110 ms 8876 KB Output is correct
38 Correct 117 ms 8964 KB Output is correct
39 Correct 91 ms 8840 KB Output is correct
40 Correct 91 ms 8372 KB Output is correct
41 Correct 104 ms 8692 KB Output is correct
42 Correct 92 ms 8744 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 2 ms 452 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 528 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 246 ms 17488 KB Output is correct
23 Correct 258 ms 17888 KB Output is correct
24 Correct 307 ms 20512 KB Output is correct
25 Correct 535 ms 31628 KB Output is correct
26 Correct 252 ms 17812 KB Output is correct
27 Correct 538 ms 31732 KB Output is correct
28 Correct 549 ms 32116 KB Output is correct
29 Correct 244 ms 17492 KB Output is correct
30 Correct 194 ms 16888 KB Output is correct
31 Correct 221 ms 19884 KB Output is correct
32 Correct 520 ms 30660 KB Output is correct
33 Correct 189 ms 17256 KB Output is correct
34 Correct 0 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 2 ms 440 KB Output is correct
39 Correct 2 ms 468 KB Output is correct
40 Correct 2 ms 448 KB Output is correct
41 Correct 191 ms 16908 KB Output is correct
42 Correct 227 ms 19888 KB Output is correct
43 Correct 485 ms 30628 KB Output is correct
44 Correct 204 ms 16944 KB Output is correct
45 Correct 111 ms 8884 KB Output is correct
46 Correct 111 ms 8816 KB Output is correct
47 Correct 91 ms 8704 KB Output is correct
48 Correct 98 ms 8744 KB Output is correct
49 Correct 96 ms 8764 KB Output is correct
50 Correct 93 ms 8700 KB Output is correct
51 Correct 687 ms 41108 KB Output is correct
52 Correct 712 ms 39688 KB Output is correct
53 Correct 532 ms 40904 KB Output is correct
54 Correct 529 ms 39704 KB Output is correct
55 Correct 547 ms 39644 KB Output is correct
56 Correct 123 ms 7076 KB Output is correct
57 Correct 112 ms 7192 KB Output is correct
58 Correct 129 ms 8872 KB Output is correct
59 Correct 129 ms 9220 KB Output is correct
60 Correct 110 ms 9040 KB Output is correct
61 Correct 111 ms 8952 KB Output is correct
62 Correct 84 ms 7736 KB Output is correct
63 Correct 103 ms 8776 KB Output is correct
64 Correct 156 ms 9276 KB Output is correct
65 Correct 129 ms 9176 KB Output is correct
66 Correct 124 ms 9104 KB Output is correct
67 Correct 108 ms 9320 KB Output is correct
68 Correct 139 ms 9004 KB Output is correct
69 Correct 129 ms 8684 KB Output is correct
70 Correct 117 ms 9012 KB Output is correct
71 Correct 110 ms 8876 KB Output is correct
72 Correct 117 ms 8964 KB Output is correct
73 Correct 91 ms 8840 KB Output is correct
74 Correct 91 ms 8372 KB Output is correct
75 Correct 104 ms 8692 KB Output is correct
76 Correct 92 ms 8744 KB Output is correct
77 Correct 840 ms 42588 KB Output is correct
78 Correct 834 ms 42576 KB Output is correct
79 Correct 680 ms 42852 KB Output is correct
80 Correct 654 ms 41996 KB Output is correct
81 Correct 661 ms 40744 KB Output is correct
82 Correct 655 ms 43292 KB Output is correct
83 Correct 862 ms 42204 KB Output is correct
84 Correct 859 ms 42764 KB Output is correct
85 Correct 819 ms 42376 KB Output is correct
86 Correct 770 ms 41832 KB Output is correct
87 Correct 748 ms 41280 KB Output is correct
88 Correct 665 ms 41532 KB Output is correct