oj.uz

Submission #768226

# Submission time Handle Problem Language Result Execution time Memory
768226 2023-06-27T17:52:15 Z AdamGS Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 850 ms 175948 KB 
#include<bits/stdc++.h>
using namespace std;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1e5+7, K=200, INF=1e9+7;
vector<int>V[LIM];
vector<pair<int,int>>P[LIM];
int odw[LIM], kiedy[LIM], czy[LIM], najd[LIM], akt, akt2;
void lacz(int a, int b) {
	++akt;
	vector<pair<int,int>>tmp;
	int la=0, lb=0;
	while(tmp.size()<200 && (la<P[a].size() || lb<P[b].size())) {
		if(lb==P[b].size() || la<P[a].size() && P[a][la].nd>=P[b][lb].nd+1) {
			if(kiedy[P[a][la].st]<akt) {
				kiedy[P[a][la].st]=akt;
				tmp.pb(P[a][la]);
			}
			++la;
		} else {
			if(kiedy[P[b][lb].st]<akt) {
				kiedy[P[b][lb].st]=akt;
				tmp.pb({P[b][lb].st, P[b][lb].nd+1});
			}
			++lb;
		}
	}
	P[a]=tmp;
}
void DFS(int x) {
	odw[x]=1;
	P[x].pb({x, 0});
	for(auto i : V[x]) {
		if(!odw[i]) DFS(i);
		lacz(x, i);
	}
}
void DFS2(int x) {
	odw[x]=1;
	najd[x]=0;
	if(czy[x]==akt2) najd[x]=-INF;
	for(auto i : V[x]) {
		if(!odw[i]) DFS2(i);
		najd[x]=max(najd[x], najd[i]+1);
	}
}
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n, m, q;
	cin >> n >> m >> q;
	while(m--) {
		int a, b;
		cin >> a >> b; --a; --b;
		V[b].pb(a);
	}
	rep(i, n) if(!odw[i]) DFS(i);
	while(q--) {
		int x, y;
		cin >> x >> y; --x;
		++akt2;
		rep(i, y) {
			int a;
			cin >> a; --a;
			czy[a]=akt2;
		}
		if(y<K) {
			int ans=-1;
			for(auto i : P[x]) if(czy[i.st]<akt2) ans=max(ans, i.nd);
			cout << ans << '\n';
			continue;
		}
		rep(i, n) odw[i]=0;
		DFS2(x);
		cout << max(najd[x], -1) << '\n';
	}
}

Compilation message

bitaro.cpp: In function 'void lacz(int, int)':
bitaro.cpp:16:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  while(tmp.size()<200 && (la<P[a].size() || lb<P[b].size())) {
      |                           ~~^~~~~~~~~~~~
bitaro.cpp:16:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  while(tmp.size()<200 && (la<P[a].size() || lb<P[b].size())) {
      |                                             ~~^~~~~~~~~~~~
bitaro.cpp:17:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   if(lb==P[b].size() || la<P[a].size() && P[a][la].nd>=P[b][lb].nd+1) {
      |      ~~^~~~~~~~~~~~~
bitaro.cpp:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   if(lb==P[b].size() || la<P[a].size() && P[a][la].nd>=P[b][lb].nd+1) {
      |                         ~~^~~~~~~~~~~~
bitaro.cpp:17:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   17 |   if(lb==P[b].size() || la<P[a].size() && P[a][la].nd>=P[b][lb].nd+1) {
      |                         ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 4 ms 5332 KB Output is correct
6 Correct 4 ms 5332 KB Output is correct
7 Correct 4 ms 5332 KB Output is correct
8 Correct 7 ms 6440 KB Output is correct
9 Correct 7 ms 6484 KB Output is correct
10 Correct 7 ms 6428 KB Output is correct
11 Correct 7 ms 6356 KB Output is correct
12 Correct 5 ms 5844 KB Output is correct
13 Correct 6 ms 6360 KB Output is correct
14 Correct 6 ms 5904 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 6 ms 5844 KB Output is correct
17 Correct 5 ms 6064 KB Output is correct
18 Correct 6 ms 5704 KB Output is correct
19 Correct 6 ms 6060 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 4 ms 5332 KB Output is correct
6 Correct 4 ms 5332 KB Output is correct
7 Correct 4 ms 5332 KB Output is correct
8 Correct 7 ms 6440 KB Output is correct
9 Correct 7 ms 6484 KB Output is correct
10 Correct 7 ms 6428 KB Output is correct
11 Correct 7 ms 6356 KB Output is correct
12 Correct 5 ms 5844 KB Output is correct
13 Correct 6 ms 6360 KB Output is correct
14 Correct 6 ms 5904 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 6 ms 5844 KB Output is correct
17 Correct 5 ms 6064 KB Output is correct
18 Correct 6 ms 5704 KB Output is correct
19 Correct 6 ms 6060 KB Output is correct
20 Correct 287 ms 9148 KB Output is correct
21 Correct 252 ms 9072 KB Output is correct
22 Correct 277 ms 9160 KB Output is correct
23 Correct 276 ms 9164 KB Output is correct
24 Correct 428 ms 120152 KB Output is correct
25 Correct 451 ms 123940 KB Output is correct
26 Correct 453 ms 123800 KB Output is correct
27 Correct 482 ms 173132 KB Output is correct
28 Correct 487 ms 173516 KB Output is correct
29 Correct 486 ms 174728 KB Output is correct
30 Correct 478 ms 169436 KB Output is correct
31 Correct 494 ms 165216 KB Output is correct
32 Correct 483 ms 169508 KB Output is correct
33 Correct 353 ms 108680 KB Output is correct
34 Correct 334 ms 93552 KB Output is correct
35 Correct 350 ms 107860 KB Output is correct
36 Correct 410 ms 139448 KB Output is correct
37 Correct 398 ms 129372 KB Output is correct
38 Correct 406 ms 139596 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 4 ms 5332 KB Output is correct
6 Correct 4 ms 5332 KB Output is correct
7 Correct 4 ms 5332 KB Output is correct
8 Correct 7 ms 6440 KB Output is correct
9 Correct 7 ms 6484 KB Output is correct
10 Correct 7 ms 6428 KB Output is correct
11 Correct 7 ms 6356 KB Output is correct
12 Correct 5 ms 5844 KB Output is correct
13 Correct 6 ms 6360 KB Output is correct
14 Correct 6 ms 5904 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 6 ms 5844 KB Output is correct
17 Correct 5 ms 6064 KB Output is correct
18 Correct 6 ms 5704 KB Output is correct
19 Correct 6 ms 6060 KB Output is correct
20 Correct 287 ms 9148 KB Output is correct
21 Correct 252 ms 9072 KB Output is correct
22 Correct 277 ms 9160 KB Output is correct
23 Correct 276 ms 9164 KB Output is correct
24 Correct 428 ms 120152 KB Output is correct
25 Correct 451 ms 123940 KB Output is correct
26 Correct 453 ms 123800 KB Output is correct
27 Correct 482 ms 173132 KB Output is correct
28 Correct 487 ms 173516 KB Output is correct
29 Correct 486 ms 174728 KB Output is correct
30 Correct 478 ms 169436 KB Output is correct
31 Correct 494 ms 165216 KB Output is correct
32 Correct 483 ms 169508 KB Output is correct
33 Correct 353 ms 108680 KB Output is correct
34 Correct 334 ms 93552 KB Output is correct
35 Correct 350 ms 107860 KB Output is correct
36 Correct 410 ms 139448 KB Output is correct
37 Correct 398 ms 129372 KB Output is correct
38 Correct 406 ms 139596 KB Output is correct
39 Correct 507 ms 122464 KB Output is correct
40 Correct 464 ms 122536 KB Output is correct
41 Correct 432 ms 122948 KB Output is correct
42 Correct 440 ms 123396 KB Output is correct
43 Correct 433 ms 122332 KB Output is correct
44 Correct 318 ms 10728 KB Output is correct
45 Correct 285 ms 9588 KB Output is correct
46 Correct 289 ms 9540 KB Output is correct
47 Correct 284 ms 9292 KB Output is correct
48 Correct 282 ms 9124 KB Output is correct
49 Correct 566 ms 170344 KB Output is correct
50 Correct 490 ms 169104 KB Output is correct
51 Correct 290 ms 10184 KB Output is correct
52 Correct 258 ms 9548 KB Output is correct
53 Correct 475 ms 139596 KB Output is correct
54 Correct 461 ms 129884 KB Output is correct
55 Correct 406 ms 138596 KB Output is correct
56 Correct 402 ms 129480 KB Output is correct
57 Correct 319 ms 10296 KB Output is correct
58 Correct 322 ms 10316 KB Output is correct
59 Correct 273 ms 9388 KB Output is correct
60 Correct 277 ms 9420 KB Output is correct
61 Correct 596 ms 175712 KB Output is correct
62 Correct 499 ms 139708 KB Output is correct
63 Correct 446 ms 129028 KB Output is correct
64 Correct 850 ms 175856 KB Output is correct
65 Correct 675 ms 139124 KB Output is correct
66 Correct 546 ms 129912 KB Output is correct
67 Correct 789 ms 175844 KB Output is correct
68 Correct 620 ms 139692 KB Output is correct
69 Correct 532 ms 128204 KB Output is correct
70 Correct 506 ms 175176 KB Output is correct
71 Correct 423 ms 139588 KB Output is correct
72 Correct 436 ms 129484 KB Output is correct
73 Correct 545 ms 175908 KB Output is correct
74 Correct 448 ms 139640 KB Output is correct
75 Correct 420 ms 129528 KB Output is correct
76 Correct 570 ms 171156 KB Output is correct
77 Correct 515 ms 175948 KB Output is correct
78 Correct 498 ms 175792 KB Output is correct
79 Correct 292 ms 10384 KB Output is correct
80 Correct 264 ms 9728 KB Output is correct
81 Correct 258 ms 9164 KB Output is correct
82 Correct 566 ms 171056 KB Output is correct
83 Correct 559 ms 166476 KB Output is correct
84 Correct 531 ms 171284 KB Output is correct
85 Correct 514 ms 165552 KB Output is correct
86 Correct 490 ms 170828 KB Output is correct
87 Correct 499 ms 165924 KB Output is correct
88 Correct 308 ms 10380 KB Output is correct
89 Correct 318 ms 10472 KB Output is correct
90 Correct 274 ms 9524 KB Output is correct
91 Correct 293 ms 9556 KB Output is correct
92 Correct 263 ms 9164 KB Output is correct
93 Correct 283 ms 9172 KB Output is correct
94 Correct 415 ms 110284 KB Output is correct
95 Correct 385 ms 94432 KB Output is correct
96 Correct 376 ms 108896 KB Output is correct
97 Correct 339 ms 95320 KB Output is correct
98 Correct 363 ms 109272 KB Output is correct
99 Correct 331 ms 94808 KB Output is correct
100 Correct 326 ms 10572 KB Output is correct
101 Correct 309 ms 10444 KB Output is correct
102 Correct 289 ms 9520 KB Output is correct
103 Correct 278 ms 9524 KB Output is correct
104 Correct 275 ms 9224 KB Output is correct
105 Correct 274 ms 9156 KB Output is correct
106 Correct 475 ms 140492 KB Output is correct
107 Correct 460 ms 130764 KB Output is correct
108 Correct 441 ms 140536 KB Output is correct
109 Correct 417 ms 129740 KB Output is correct
110 Correct 424 ms 140420 KB Output is correct
111 Correct 406 ms 130124 KB Output is correct
112 Correct 318 ms 10588 KB Output is correct
113 Correct 314 ms 10480 KB Output is correct
114 Correct 283 ms 9680 KB Output is correct
115 Correct 280 ms 9420 KB Output is correct
116 Correct 269 ms 9140 KB Output is correct
117 Correct 286 ms 9148 KB Output is correct
118 Correct 488 ms 169104 KB Output is correct
119 Correct 414 ms 139280 KB Output is correct
120 Correct 400 ms 128684 KB Output is correct
121 Correct 494 ms 169156 KB Output is correct
122 Correct 411 ms 138884 KB Output is correct
123 Correct 400 ms 128652 KB Output is correct
124 Correct 487 ms 169084 KB Output is correct
125 Correct 408 ms 139632 KB Output is correct
126 Correct 393 ms 128320 KB Output is correct