oj.uz

Submission #556725

# Submission time Handle Problem Language Result Execution time Memory
556725 2022-05-03T18:52:40 Z lunchbox Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 918 ms 255700 KB 
/*
https://oj.uz/problem/view/JOI18_bitaro
Bitaro's Party
*/
#include <bits/stdc++.h>
using namespace std;

using LL = long long;
const int N = 100000, B = 317, Q = 100000, INF = 0x3f3f3f3f;

vector<int> gr[N];
pair<int, int> pp[N][B];

void join(pair<int, int> *aa, pair<int, int> *bb, pair<int, int> *cc) {
	static int used[N], _ = 1;

	int i = 0, j = 0;

	for (int k = 0; k < B; k++) {
		while (i < B && aa[i].second != -1 && used[aa[i].second] == _)
			i++;
		while (j < B && bb[j].second != -1 && used[bb[j].second] == _)
			j++;
		if (i == B)
			cc[k] = {bb[j].first + 1, bb[j].second}, j++;
		else if (j == B)
			cc[k] = aa[i++];
		else if (aa[i].first > bb[j].first + 1)
			cc[k] = aa[i++];
		else
			cc[k] = {bb[j].first + 1, bb[j].second}, j++;
		if (cc[k].second != -1)
			used[cc[k].second] = _;
	}
	_++;
}

void run() {
	int n, m, q;

	scanf("%d%d%d", &n, &m, &q);
	while (m--) {
		int i, j;

		scanf("%d%d", &i, &j), i--, j--;
		gr[j].push_back(i);
	}
	for (int i = 0; i < n; i++) {
		static pair<int, int> tmp[B];

		for (int j = 0; j < B; j++)
			pp[i][j] = { -INF, -1};
		pp[i][0] = {0, i};
		for (int j : gr[i]) {
			join(pp[i], pp[j], tmp);
			for (int k = 0; k < B; k++)
				pp[i][k] = tmp[k];
		}
	}
	for (int h = 1; h <= q; h++) {
		static int removed[N];
		int i, k, ans = -1;

		scanf("%d%d", &i, &k), i--;
		for (int _ = 0; _ < k; _++) {
			int j;

			scanf("%d", &j), j--;
			removed[j] = h;
		}
		if (k < B) {
			for (int _ = 0; _ < B; _++) {
				auto [d, j] = pp[i][_];

				if (j == -1)
					break;
				if (removed[j] != h)
					ans = max(ans, d);
			}
		} else {
			static int dd[N];

			memset(dd, -0x3f, n * sizeof * dd);
			dd[i] = 0;
			for (int j = i; j >= 0; j--) {
				int d = dd[j];

				if (d == -INF)
					continue;
				if (removed[j] != h)
					ans = max(ans, d);
				for (int k : gr[j])
					dd[k] = max(dd[k], d + 1);
			}
		}
		printf("%d\n", ans);
	}
}

int main() {
	run();
	return 0;
}

Compilation message

bitaro.cpp: In function 'void run()':
bitaro.cpp:41:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |  scanf("%d%d%d", &n, &m, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
bitaro.cpp:45:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |   scanf("%d%d", &i, &j), i--, j--;
      |   ~~~~~^~~~~~~~~~~~~~~~
bitaro.cpp:64:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |   scanf("%d%d", &i, &k), i--;
      |   ~~~~~^~~~~~~~~~~~~~~~
bitaro.cpp:68:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |    scanf("%d", &j), j--;
      |    ~~~~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2656 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 10 ms 5088 KB Output is correct
6 Correct 7 ms 5332 KB Output is correct
7 Correct 6 ms 5204 KB Output is correct
8 Correct 6 ms 5204 KB Output is correct
9 Correct 7 ms 5204 KB Output is correct
10 Correct 7 ms 5200 KB Output is correct
11 Correct 6 ms 5204 KB Output is correct
12 Correct 7 ms 5204 KB Output is correct
13 Correct 7 ms 5204 KB Output is correct
14 Correct 8 ms 5176 KB Output is correct
15 Correct 7 ms 5104 KB Output is correct
16 Correct 7 ms 5204 KB Output is correct
17 Correct 7 ms 5108 KB Output is correct
18 Correct 6 ms 5144 KB Output is correct
19 Correct 7 ms 5204 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2656 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 10 ms 5088 KB Output is correct
6 Correct 7 ms 5332 KB Output is correct
7 Correct 6 ms 5204 KB Output is correct
8 Correct 6 ms 5204 KB Output is correct
9 Correct 7 ms 5204 KB Output is correct
10 Correct 7 ms 5200 KB Output is correct
11 Correct 6 ms 5204 KB Output is correct
12 Correct 7 ms 5204 KB Output is correct
13 Correct 7 ms 5204 KB Output is correct
14 Correct 8 ms 5176 KB Output is correct
15 Correct 7 ms 5104 KB Output is correct
16 Correct 7 ms 5204 KB Output is correct
17 Correct 7 ms 5108 KB Output is correct
18 Correct 6 ms 5144 KB Output is correct
19 Correct 7 ms 5204 KB Output is correct
20 Correct 394 ms 6628 KB Output is correct
21 Correct 412 ms 6564 KB Output is correct
22 Correct 362 ms 6680 KB Output is correct
23 Correct 422 ms 6636 KB Output is correct
24 Correct 627 ms 255004 KB Output is correct
25 Correct 652 ms 254992 KB Output is correct
26 Correct 679 ms 254704 KB Output is correct
27 Correct 610 ms 255052 KB Output is correct
28 Correct 620 ms 254912 KB Output is correct
29 Correct 582 ms 254800 KB Output is correct
30 Correct 611 ms 255044 KB Output is correct
31 Correct 591 ms 255016 KB Output is correct
32 Correct 580 ms 254752 KB Output is correct
33 Correct 562 ms 254844 KB Output is correct
34 Correct 533 ms 254808 KB Output is correct
35 Correct 609 ms 254696 KB Output is correct
36 Correct 584 ms 254880 KB Output is correct
37 Correct 609 ms 254916 KB Output is correct
38 Correct 590 ms 254784 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2656 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 10 ms 5088 KB Output is correct
6 Correct 7 ms 5332 KB Output is correct
7 Correct 6 ms 5204 KB Output is correct
8 Correct 6 ms 5204 KB Output is correct
9 Correct 7 ms 5204 KB Output is correct
10 Correct 7 ms 5200 KB Output is correct
11 Correct 6 ms 5204 KB Output is correct
12 Correct 7 ms 5204 KB Output is correct
13 Correct 7 ms 5204 KB Output is correct
14 Correct 8 ms 5176 KB Output is correct
15 Correct 7 ms 5104 KB Output is correct
16 Correct 7 ms 5204 KB Output is correct
17 Correct 7 ms 5108 KB Output is correct
18 Correct 6 ms 5144 KB Output is correct
19 Correct 7 ms 5204 KB Output is correct
20 Correct 394 ms 6628 KB Output is correct
21 Correct 412 ms 6564 KB Output is correct
22 Correct 362 ms 6680 KB Output is correct
23 Correct 422 ms 6636 KB Output is correct
24 Correct 627 ms 255004 KB Output is correct
25 Correct 652 ms 254992 KB Output is correct
26 Correct 679 ms 254704 KB Output is correct
27 Correct 610 ms 255052 KB Output is correct
28 Correct 620 ms 254912 KB Output is correct
29 Correct 582 ms 254800 KB Output is correct
30 Correct 611 ms 255044 KB Output is correct
31 Correct 591 ms 255016 KB Output is correct
32 Correct 580 ms 254752 KB Output is correct
33 Correct 562 ms 254844 KB Output is correct
34 Correct 533 ms 254808 KB Output is correct
35 Correct 609 ms 254696 KB Output is correct
36 Correct 584 ms 254880 KB Output is correct
37 Correct 609 ms 254916 KB Output is correct
38 Correct 590 ms 254784 KB Output is correct
39 Correct 747 ms 254788 KB Output is correct
40 Correct 647 ms 254364 KB Output is correct
41 Correct 650 ms 254456 KB Output is correct
42 Correct 806 ms 254884 KB Output is correct
43 Correct 653 ms 254872 KB Output is correct
44 Correct 437 ms 6824 KB Output is correct
45 Correct 398 ms 7480 KB Output is correct
46 Correct 395 ms 7592 KB Output is correct
47 Correct 430 ms 7472 KB Output is correct
48 Correct 393 ms 7464 KB Output is correct
49 Correct 711 ms 255700 KB Output is correct
50 Correct 591 ms 255092 KB Output is correct
51 Correct 485 ms 7828 KB Output is correct
52 Correct 382 ms 7420 KB Output is correct
53 Correct 650 ms 255432 KB Output is correct
54 Correct 723 ms 255260 KB Output is correct
55 Correct 553 ms 254904 KB Output is correct
56 Correct 613 ms 255064 KB Output is correct
57 Correct 492 ms 7828 KB Output is correct
58 Correct 412 ms 7756 KB Output is correct
59 Correct 447 ms 7420 KB Output is correct
60 Correct 380 ms 7356 KB Output is correct
61 Correct 697 ms 255196 KB Output is correct
62 Correct 743 ms 255264 KB Output is correct
63 Correct 727 ms 255364 KB Output is correct
64 Correct 789 ms 255380 KB Output is correct
65 Correct 839 ms 255344 KB Output is correct
66 Correct 918 ms 255316 KB Output is correct
67 Correct 577 ms 254832 KB Output is correct
68 Correct 691 ms 254828 KB Output is correct
69 Correct 725 ms 254744 KB Output is correct
70 Correct 556 ms 255324 KB Output is correct
71 Correct 602 ms 255204 KB Output is correct
72 Correct 700 ms 255300 KB Output is correct
73 Correct 584 ms 255204 KB Output is correct
74 Correct 670 ms 255312 KB Output is correct
75 Correct 661 ms 255048 KB Output is correct
76 Correct 729 ms 255668 KB Output is correct
77 Correct 593 ms 255140 KB Output is correct
78 Correct 638 ms 255512 KB Output is correct
79 Correct 464 ms 7556 KB Output is correct
80 Correct 405 ms 7180 KB Output is correct
81 Correct 386 ms 7244 KB Output is correct
82 Correct 715 ms 255592 KB Output is correct
83 Correct 765 ms 255384 KB Output is correct
84 Correct 573 ms 254944 KB Output is correct
85 Correct 647 ms 255044 KB Output is correct
86 Correct 633 ms 255336 KB Output is correct
87 Correct 654 ms 255412 KB Output is correct
88 Correct 497 ms 7172 KB Output is correct
89 Correct 433 ms 7300 KB Output is correct
90 Correct 399 ms 6912 KB Output is correct
91 Correct 413 ms 6932 KB Output is correct
92 Correct 408 ms 6856 KB Output is correct
93 Correct 354 ms 7080 KB Output is correct
94 Correct 670 ms 255032 KB Output is correct
95 Correct 608 ms 254844 KB Output is correct
96 Correct 584 ms 254704 KB Output is correct
97 Correct 522 ms 254664 KB Output is correct
98 Correct 597 ms 255164 KB Output is correct
99 Correct 564 ms 254964 KB Output is correct
100 Correct 486 ms 7200 KB Output is correct
101 Correct 505 ms 7152 KB Output is correct
102 Correct 397 ms 6912 KB Output is correct
103 Correct 446 ms 6884 KB Output is correct
104 Correct 409 ms 6840 KB Output is correct
105 Correct 391 ms 6768 KB Output is correct
106 Correct 710 ms 255112 KB Output is correct
107 Correct 710 ms 254816 KB Output is correct
108 Correct 680 ms 254492 KB Output is correct
109 Correct 618 ms 254484 KB Output is correct
110 Correct 593 ms 254832 KB Output is correct
111 Correct 614 ms 254780 KB Output is correct
112 Correct 483 ms 6828 KB Output is correct
113 Correct 416 ms 6928 KB Output is correct
114 Correct 410 ms 6604 KB Output is correct
115 Correct 349 ms 6532 KB Output is correct
116 Correct 375 ms 6468 KB Output is correct
117 Correct 384 ms 6600 KB Output is correct
118 Correct 546 ms 254028 KB Output is correct
119 Correct 575 ms 254172 KB Output is correct
120 Correct 597 ms 253948 KB Output is correct
121 Correct 569 ms 254164 KB Output is correct
122 Correct 555 ms 253988 KB Output is correct
123 Correct 653 ms 253972 KB Output is correct
124 Correct 583 ms 253988 KB Output is correct
125 Correct 558 ms 253992 KB Output is correct
126 Correct 588 ms 253900 KB Output is correct