oj.uz

Submission #1111199

# Submission time Handle Problem Language Result Execution time Memory
1111199 2024-11-11T17:05:13 Z sleepntsheep Curtains (NOI23_curtains) C
100 / 100
 569 ms 71724 KB 
#include <stdio.h>
#include <stdlib.h>

#define N 500005

int n, m, q, *eh[N], eo[N], *eh_[N], eo_[N], ii[N], ii_[N], ans[N], I[N], qr[N], ql[N];

void pus(int **eh, int *eo, int i, int j) {
	int o = eo[i]++;
	if (!o) eh[i] = (int*)malloc(2 * sizeof **eh);
	else if (!(o & (o - 1))) eh[i] = (int*)realloc(eh[i], 2 * o * sizeof **eh);
	eh[i][o] = j;
}

int cmpr(const void *i, const void *j) {
	return *(const int*)i - *(const int*)j;
}

void dnc(int x, int y, int *a, int q) {
	if (x > y) 
		return;

	int *al = 0, *ar = 0, ao = 0, ao_ = 0, m = (x + y) / 2;
	for (int i = 0; i < q; ++i) 
		if (qr[a[i]] < m) 
			pus(&al, &ao, 0, a[i]);

	dnc(x, m - 1, al, ao);
	free(al);

	static int closeL[N], closeR[N], stk[N], sz;
	sz = 0;
	
	for (int i = m; i >= x; --i) {
		while (eh[i][ii[i] + 1] < m) ++ii[i];
		int opt = eh[i][ii[i] + 1], rr = eh[i][ii[i]];

			for (; sz && stk[sz] <= rr + 1; --sz)
				if (opt > closeL[stk[sz]])
					opt = closeL[stk[sz]];
		stk[++sz] = i;
		closeL[i] = opt;
	}
	
	sz = 0;
	for (int i = m; i <= y; ++i) {
		while (eh_[i][ii_[i] + 1] <= m) ++ii_[i];
		int opt = eh_[i][ii_[i]], ll = eh_[i][ii_[i] + 1];

			for (; sz && stk[sz] >= ll - 1; --sz)
				if (opt < closeR[stk[sz]])
					opt = closeR[stk[sz]];
		stk[++sz] = i;
		closeR[i] = opt;
	}

	for (int i = 0; i < q; ++i) {
		int l = ql[a[i]], r = qr[a[i]];
		if (l <= m && m <= r)
			ans[a[i]] = closeL[l] <= r && closeR[r] >= l;
		else if (l > m)
			pus(&ar, &ao_, 0, a[i]);
	}

	dnc(m + 1, y, ar, ao_);
	free(ar);
}

int main() {
	scanf("%d%d%d", &n, &m, &q);
	for (int i = m, l, r; i--;)
		scanf("%d%d", &l, &r),
		pus(eh, eo, l, r),
		pus(eh_, eo_, r, l);
	
	for (int i = 1; i <= n; ++i)
		pus(eh, eo, i, i - 1),
		pus(eh, eo, i, N + 1),
		pus(eh_, eo_, i, i + 1),
		pus(eh_, eo_, i, 0),
		qsort(eh[i], eo[i], sizeof **eh, cmpr),
		qsort(eh_[i], eo_[i], sizeof **eh_, cmpr);

	for (int i = 0; i < q; ++i)
		scanf("%d%d", ql + i, qr + i), I[i] = i;

	dnc(1, n, I, q);
	
	for (int i = 0; i < q; ++i)
		puts(ans[i]? "YES": "NO");
}

Compilation message

curtains.c: In function 'main':
curtains.c:70:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |  scanf("%d%d%d", &n, &m, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
curtains.c:72:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |   scanf("%d%d", &l, &r),
      |   ^~~~~~~~~~~~~~~~~~~~~
curtains.c:85:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |   scanf("%d%d", ql + i, qr + i), I[i] = i;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14672 KB Output is correct
2 Correct 2 ms 14672 KB Output is correct
3 Correct 2 ms 14672 KB Output is correct
4 Correct 2 ms 14672 KB Output is correct
5 Correct 3 ms 14928 KB Output is correct
6 Correct 2 ms 14672 KB Output is correct
7 Correct 3 ms 14672 KB Output is correct
8 Correct 3 ms 14672 KB Output is correct
9 Correct 2 ms 14812 KB Output is correct
10 Correct 2 ms 14672 KB Output is correct
11 Correct 2 ms 14672 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14672 KB Output is correct
2 Correct 2 ms 14672 KB Output is correct
3 Correct 2 ms 14672 KB Output is correct
4 Correct 2 ms 14672 KB Output is correct
5 Correct 3 ms 14928 KB Output is correct
6 Correct 2 ms 14672 KB Output is correct
7 Correct 3 ms 14672 KB Output is correct
8 Correct 3 ms 14672 KB Output is correct
9 Correct 2 ms 14812 KB Output is correct
10 Correct 2 ms 14672 KB Output is correct
11 Correct 2 ms 14672 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct
13 Correct 4 ms 14928 KB Output is correct
14 Correct 3 ms 14928 KB Output is correct
15 Correct 3 ms 14928 KB Output is correct
16 Correct 4 ms 15104 KB Output is correct
17 Correct 3 ms 14928 KB Output is correct
18 Correct 3 ms 10832 KB Output is correct
19 Correct 3 ms 12880 KB Output is correct
20 Correct 4 ms 14944 KB Output is correct
21 Correct 5 ms 14928 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14672 KB Output is correct
2 Correct 2 ms 14672 KB Output is correct
3 Correct 2 ms 14672 KB Output is correct
4 Correct 2 ms 14672 KB Output is correct
5 Correct 3 ms 14928 KB Output is correct
6 Correct 2 ms 14672 KB Output is correct
7 Correct 3 ms 14672 KB Output is correct
8 Correct 3 ms 14672 KB Output is correct
9 Correct 2 ms 14812 KB Output is correct
10 Correct 2 ms 14672 KB Output is correct
11 Correct 2 ms 14672 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct
13 Correct 4 ms 14928 KB Output is correct
14 Correct 3 ms 14928 KB Output is correct
15 Correct 3 ms 14928 KB Output is correct
16 Correct 4 ms 15104 KB Output is correct
17 Correct 3 ms 14928 KB Output is correct
18 Correct 3 ms 10832 KB Output is correct
19 Correct 3 ms 12880 KB Output is correct
20 Correct 4 ms 14944 KB Output is correct
21 Correct 5 ms 14928 KB Output is correct
22 Correct 98 ms 18284 KB Output is correct
23 Correct 92 ms 21856 KB Output is correct
24 Correct 114 ms 22876 KB Output is correct
25 Correct 210 ms 25360 KB Output is correct
26 Correct 95 ms 22776 KB Output is correct
27 Correct 203 ms 32216 KB Output is correct
28 Correct 223 ms 32272 KB Output is correct
29 Correct 81 ms 23236 KB Output is correct
30 Correct 79 ms 18720 KB Output is correct
31 Correct 81 ms 19412 KB Output is correct
32 Correct 190 ms 24864 KB Output is correct
33 Correct 80 ms 21604 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12624 KB Output is correct
2 Correct 2 ms 12624 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 2 ms 6480 KB Output is correct
5 Correct 5 ms 12880 KB Output is correct
6 Correct 4 ms 14928 KB Output is correct
7 Correct 4 ms 14928 KB Output is correct
8 Correct 91 ms 18652 KB Output is correct
9 Correct 84 ms 19384 KB Output is correct
10 Correct 203 ms 24612 KB Output is correct
11 Correct 74 ms 21528 KB Output is correct
12 Correct 58 ms 25988 KB Output is correct
13 Correct 60 ms 27748 KB Output is correct
14 Correct 66 ms 25764 KB Output is correct
15 Correct 64 ms 25752 KB Output is correct
16 Correct 65 ms 24020 KB Output is correct
17 Correct 64 ms 25888 KB Output is correct
18 Correct 392 ms 63116 KB Output is correct
19 Correct 452 ms 71724 KB Output is correct
20 Correct 461 ms 70984 KB Output is correct
21 Correct 469 ms 71308 KB Output is correct
22 Correct 397 ms 68452 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14672 KB Output is correct
2 Correct 2 ms 14672 KB Output is correct
3 Correct 2 ms 14672 KB Output is correct
4 Correct 2 ms 14672 KB Output is correct
5 Correct 3 ms 14928 KB Output is correct
6 Correct 2 ms 14672 KB Output is correct
7 Correct 3 ms 14672 KB Output is correct
8 Correct 3 ms 14672 KB Output is correct
9 Correct 2 ms 14812 KB Output is correct
10 Correct 2 ms 14672 KB Output is correct
11 Correct 2 ms 14672 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct
13 Correct 4 ms 14928 KB Output is correct
14 Correct 3 ms 14928 KB Output is correct
15 Correct 3 ms 14928 KB Output is correct
16 Correct 4 ms 15104 KB Output is correct
17 Correct 3 ms 14928 KB Output is correct
18 Correct 3 ms 10832 KB Output is correct
19 Correct 3 ms 12880 KB Output is correct
20 Correct 4 ms 14944 KB Output is correct
21 Correct 5 ms 14928 KB Output is correct
22 Correct 51 ms 19720 KB Output is correct
23 Correct 40 ms 19792 KB Output is correct
24 Correct 70 ms 27984 KB Output is correct
25 Correct 58 ms 25824 KB Output is correct
26 Correct 66 ms 27832 KB Output is correct
27 Correct 54 ms 25672 KB Output is correct
28 Correct 57 ms 25440 KB Output is correct
29 Correct 63 ms 26696 KB Output is correct
30 Correct 68 ms 27212 KB Output is correct
31 Correct 61 ms 25808 KB Output is correct
32 Correct 90 ms 25836 KB Output is correct
33 Correct 100 ms 26080 KB Output is correct
34 Correct 61 ms 25928 KB Output is correct
35 Correct 69 ms 25988 KB Output is correct
36 Correct 75 ms 25736 KB Output is correct
37 Correct 67 ms 27268 KB Output is correct
38 Correct 68 ms 24196 KB Output is correct
39 Correct 64 ms 22048 KB Output is correct
40 Correct 77 ms 27168 KB Output is correct
41 Correct 68 ms 24100 KB Output is correct
42 Correct 74 ms 20512 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14672 KB Output is correct
2 Correct 2 ms 14672 KB Output is correct
3 Correct 2 ms 14672 KB Output is correct
4 Correct 2 ms 14672 KB Output is correct
5 Correct 3 ms 14928 KB Output is correct
6 Correct 2 ms 14672 KB Output is correct
7 Correct 3 ms 14672 KB Output is correct
8 Correct 3 ms 14672 KB Output is correct
9 Correct 2 ms 14812 KB Output is correct
10 Correct 2 ms 14672 KB Output is correct
11 Correct 2 ms 14672 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct
13 Correct 4 ms 14928 KB Output is correct
14 Correct 3 ms 14928 KB Output is correct
15 Correct 3 ms 14928 KB Output is correct
16 Correct 4 ms 15104 KB Output is correct
17 Correct 3 ms 14928 KB Output is correct
18 Correct 3 ms 10832 KB Output is correct
19 Correct 3 ms 12880 KB Output is correct
20 Correct 4 ms 14944 KB Output is correct
21 Correct 5 ms 14928 KB Output is correct
22 Correct 98 ms 18284 KB Output is correct
23 Correct 92 ms 21856 KB Output is correct
24 Correct 114 ms 22876 KB Output is correct
25 Correct 210 ms 25360 KB Output is correct
26 Correct 95 ms 22776 KB Output is correct
27 Correct 203 ms 32216 KB Output is correct
28 Correct 223 ms 32272 KB Output is correct
29 Correct 81 ms 23236 KB Output is correct
30 Correct 79 ms 18720 KB Output is correct
31 Correct 81 ms 19412 KB Output is correct
32 Correct 190 ms 24864 KB Output is correct
33 Correct 80 ms 21604 KB Output is correct
34 Correct 2 ms 12624 KB Output is correct
35 Correct 2 ms 12624 KB Output is correct
36 Correct 1 ms 6480 KB Output is correct
37 Correct 2 ms 6480 KB Output is correct
38 Correct 5 ms 12880 KB Output is correct
39 Correct 4 ms 14928 KB Output is correct
40 Correct 4 ms 14928 KB Output is correct
41 Correct 91 ms 18652 KB Output is correct
42 Correct 84 ms 19384 KB Output is correct
43 Correct 203 ms 24612 KB Output is correct
44 Correct 74 ms 21528 KB Output is correct
45 Correct 58 ms 25988 KB Output is correct
46 Correct 60 ms 27748 KB Output is correct
47 Correct 66 ms 25764 KB Output is correct
48 Correct 64 ms 25752 KB Output is correct
49 Correct 65 ms 24020 KB Output is correct
50 Correct 64 ms 25888 KB Output is correct
51 Correct 392 ms 63116 KB Output is correct
52 Correct 452 ms 71724 KB Output is correct
53 Correct 461 ms 70984 KB Output is correct
54 Correct 469 ms 71308 KB Output is correct
55 Correct 397 ms 68452 KB Output is correct
56 Correct 51 ms 19720 KB Output is correct
57 Correct 40 ms 19792 KB Output is correct
58 Correct 70 ms 27984 KB Output is correct
59 Correct 58 ms 25824 KB Output is correct
60 Correct 66 ms 27832 KB Output is correct
61 Correct 54 ms 25672 KB Output is correct
62 Correct 57 ms 25440 KB Output is correct
63 Correct 63 ms 26696 KB Output is correct
64 Correct 68 ms 27212 KB Output is correct
65 Correct 61 ms 25808 KB Output is correct
66 Correct 90 ms 25836 KB Output is correct
67 Correct 100 ms 26080 KB Output is correct
68 Correct 61 ms 25928 KB Output is correct
69 Correct 69 ms 25988 KB Output is correct
70 Correct 75 ms 25736 KB Output is correct
71 Correct 67 ms 27268 KB Output is correct
72 Correct 68 ms 24196 KB Output is correct
73 Correct 64 ms 22048 KB Output is correct
74 Correct 77 ms 27168 KB Output is correct
75 Correct 68 ms 24100 KB Output is correct
76 Correct 74 ms 20512 KB Output is correct
77 Correct 477 ms 69984 KB Output is correct
78 Correct 569 ms 69980 KB Output is correct
79 Correct 487 ms 69304 KB Output is correct
80 Correct 468 ms 69728 KB Output is correct
81 Correct 397 ms 69076 KB Output is correct
82 Correct 417 ms 68476 KB Output is correct
83 Correct 463 ms 63068 KB Output is correct
84 Correct 437 ms 63068 KB Output is correct
85 Correct 564 ms 70064 KB Output is correct
86 Correct 441 ms 62888 KB Output is correct
87 Correct 434 ms 70420 KB Output is correct
88 Correct 449 ms 61496 KB Output is correct