oj.uz

Submission #888056

# Submission time Handle Problem Language Result Execution time Memory
888056 2023-12-15T20:58:15 Z PM1 Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 657 ms 214608 KB 
#include <bits/stdc++.h>
using namespace std;
#define fr first
#define sc second
const int mxn=1e5+5,sq=130;
int n,m,q,mark[mxn];
vector<int>v[mxn];
vector<pair<int,int> >pre[mxn];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m>>q;
	for(int i=1;i<=m;i++){
		int x,y;
		cin>>x>>y;
		v[y].push_back(x);
	}
	for(int i=1;i<=n;i++){
		int p[v[i].size()];
		memset(p,0,sizeof p);
		pair<int,int>num;
		while(pre[i].size()<sq){
			for(int j=0;j<v[i].size();j++){
				int x=v[i][j];
				if(p[j]>=pre[x].size() )continue;
				while( p[j]<pre[x].size()&&mark[pre[x][p[j]].fr] )p[j]++;//cout<<j<<" "<<p[j]<<endl;
				if(p[j]>=pre[x].size())continue;
				if(pre[x][p[j]].sc+1>=num.sc){
					num.sc=pre[x][p[j]].sc+1;
					num.fr=pre[x][p[j]].fr;
				}
			}
			if(num.fr==0)break;
			mark[num.fr]=1;
			pre[i].push_back(num);
			num={0,0};
		}
		if(pre[i].size()<sq){
			pre[i].push_back({i,0});
			mark[i]=1;
		}
		for(auto j:pre[i]){
			mark[j.fr]=0;
		}
		for(int j=2;j<pre[i].size();j++){
			assert(pre[i][j].sc<=pre[i][j-1].sc);
		}
	}
	while(q--){
		int t,y;
		cin>>t>>y;
		int a[y];
		for(int i=0;i<y;i++){
			cin>>a[i];
			mark[a[i]]=1;
		}
		if(y>=sq){
			int dp[t+1];
			for(int i=1;i<=t;i++){
				dp[i]=(mark[i])?-1e6:0;
				for(auto j:v[i]){
					dp[i]=max(dp[i],dp[j]+1);
				}
			}
			if(dp[t]<0)dp[t]=-1;
			cout<<dp[t]<<'\n';
		}
		else{
			int d=0;
			for(auto i:pre[t]){
				if(!mark[i.fr]){
					d=1;
					cout<<i.sc<<'\n';
					break;
				}
			}
			if(!d)
				cout<<-1<<'\n';
		}
		for(int i=0;i<y;i++)
			mark[a[i]]=0;
	}
}

Compilation message

bitaro.cpp: In function 'int main()':
bitaro.cpp:24:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |    for(int j=0;j<v[i].size();j++){
      |                ~^~~~~~~~~~~~
bitaro.cpp:26:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     if(p[j]>=pre[x].size() )continue;
      |        ~~~~^~~~~~~~~~~~~~~
bitaro.cpp:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     while( p[j]<pre[x].size()&&mark[pre[x][p[j]].fr] )p[j]++;//cout<<j<<" "<<p[j]<<endl;
      |            ~~~~^~~~~~~~~~~~~~
bitaro.cpp:28:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     if(p[j]>=pre[x].size())continue;
      |        ~~~~^~~~~~~~~~~~~~~
bitaro.cpp:46:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |   for(int j=2;j<pre[i].size();j++){
      |               ~^~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4952 KB Output is correct
2 Correct 1 ms 5036 KB Output is correct
3 Correct 1 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 4 ms 5468 KB Output is correct
6 Correct 3 ms 5532 KB Output is correct
7 Correct 3 ms 5468 KB Output is correct
8 Correct 5 ms 7032 KB Output is correct
9 Correct 5 ms 7000 KB Output is correct
10 Correct 6 ms 7256 KB Output is correct
11 Correct 5 ms 6844 KB Output is correct
12 Correct 3 ms 6236 KB Output is correct
13 Correct 7 ms 6748 KB Output is correct
14 Correct 4 ms 6236 KB Output is correct
15 Correct 3 ms 5724 KB Output is correct
16 Correct 3 ms 6236 KB Output is correct
17 Correct 4 ms 6232 KB Output is correct
18 Correct 3 ms 5980 KB Output is correct
19 Correct 4 ms 6492 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4952 KB Output is correct
2 Correct 1 ms 5036 KB Output is correct
3 Correct 1 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 4 ms 5468 KB Output is correct
6 Correct 3 ms 5532 KB Output is correct
7 Correct 3 ms 5468 KB Output is correct
8 Correct 5 ms 7032 KB Output is correct
9 Correct 5 ms 7000 KB Output is correct
10 Correct 6 ms 7256 KB Output is correct
11 Correct 5 ms 6844 KB Output is correct
12 Correct 3 ms 6236 KB Output is correct
13 Correct 7 ms 6748 KB Output is correct
14 Correct 4 ms 6236 KB Output is correct
15 Correct 3 ms 5724 KB Output is correct
16 Correct 3 ms 6236 KB Output is correct
17 Correct 4 ms 6232 KB Output is correct
18 Correct 3 ms 5980 KB Output is correct
19 Correct 4 ms 6492 KB Output is correct
20 Correct 135 ms 7940 KB Output is correct
21 Correct 134 ms 8016 KB Output is correct
22 Correct 130 ms 8016 KB Output is correct
23 Correct 134 ms 8120 KB Output is correct
24 Correct 315 ms 150868 KB Output is correct
25 Correct 328 ms 155168 KB Output is correct
26 Correct 325 ms 155476 KB Output is correct
27 Correct 448 ms 210768 KB Output is correct
28 Correct 458 ms 210768 KB Output is correct
29 Correct 455 ms 210772 KB Output is correct
30 Correct 459 ms 210768 KB Output is correct
31 Correct 469 ms 205428 KB Output is correct
32 Correct 452 ms 210440 KB Output is correct
33 Correct 235 ms 132436 KB Output is correct
34 Correct 225 ms 114100 KB Output is correct
35 Correct 235 ms 131668 KB Output is correct
36 Correct 278 ms 171908 KB Output is correct
37 Correct 303 ms 159624 KB Output is correct
38 Correct 285 ms 172336 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4952 KB Output is correct
2 Correct 1 ms 5036 KB Output is correct
3 Correct 1 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 4 ms 5468 KB Output is correct
6 Correct 3 ms 5532 KB Output is correct
7 Correct 3 ms 5468 KB Output is correct
8 Correct 5 ms 7032 KB Output is correct
9 Correct 5 ms 7000 KB Output is correct
10 Correct 6 ms 7256 KB Output is correct
11 Correct 5 ms 6844 KB Output is correct
12 Correct 3 ms 6236 KB Output is correct
13 Correct 7 ms 6748 KB Output is correct
14 Correct 4 ms 6236 KB Output is correct
15 Correct 3 ms 5724 KB Output is correct
16 Correct 3 ms 6236 KB Output is correct
17 Correct 4 ms 6232 KB Output is correct
18 Correct 3 ms 5980 KB Output is correct
19 Correct 4 ms 6492 KB Output is correct
20 Correct 135 ms 7940 KB Output is correct
21 Correct 134 ms 8016 KB Output is correct
22 Correct 130 ms 8016 KB Output is correct
23 Correct 134 ms 8120 KB Output is correct
24 Correct 315 ms 150868 KB Output is correct
25 Correct 328 ms 155168 KB Output is correct
26 Correct 325 ms 155476 KB Output is correct
27 Correct 448 ms 210768 KB Output is correct
28 Correct 458 ms 210768 KB Output is correct
29 Correct 455 ms 210772 KB Output is correct
30 Correct 459 ms 210768 KB Output is correct
31 Correct 469 ms 205428 KB Output is correct
32 Correct 452 ms 210440 KB Output is correct
33 Correct 235 ms 132436 KB Output is correct
34 Correct 225 ms 114100 KB Output is correct
35 Correct 235 ms 131668 KB Output is correct
36 Correct 278 ms 171908 KB Output is correct
37 Correct 303 ms 159624 KB Output is correct
38 Correct 285 ms 172336 KB Output is correct
39 Correct 348 ms 151904 KB Output is correct
40 Correct 327 ms 155988 KB Output is correct
41 Correct 330 ms 156688 KB Output is correct
42 Correct 370 ms 156784 KB Output is correct
43 Correct 336 ms 155692 KB Output is correct
44 Correct 152 ms 10836 KB Output is correct
45 Correct 135 ms 10168 KB Output is correct
46 Correct 136 ms 10028 KB Output is correct
47 Correct 144 ms 9812 KB Output is correct
48 Correct 132 ms 9532 KB Output is correct
49 Correct 492 ms 213856 KB Output is correct
50 Correct 465 ms 212872 KB Output is correct
51 Correct 155 ms 10580 KB Output is correct
52 Correct 138 ms 9856 KB Output is correct
53 Correct 317 ms 174940 KB Output is correct
54 Correct 358 ms 162640 KB Output is correct
55 Correct 290 ms 174160 KB Output is correct
56 Correct 304 ms 162644 KB Output is correct
57 Correct 156 ms 10836 KB Output is correct
58 Correct 155 ms 10916 KB Output is correct
59 Correct 140 ms 9920 KB Output is correct
60 Correct 137 ms 9936 KB Output is correct
61 Correct 532 ms 213080 KB Output is correct
62 Correct 326 ms 174676 KB Output is correct
63 Correct 342 ms 162288 KB Output is correct
64 Correct 583 ms 213056 KB Output is correct
65 Correct 413 ms 174160 KB Output is correct
66 Correct 450 ms 163108 KB Output is correct
67 Correct 657 ms 213076 KB Output is correct
68 Correct 505 ms 174676 KB Output is correct
69 Correct 524 ms 160992 KB Output is correct
70 Correct 468 ms 213072 KB Output is correct
71 Correct 286 ms 174672 KB Output is correct
72 Correct 311 ms 162708 KB Output is correct
73 Correct 472 ms 213072 KB Output is correct
74 Correct 306 ms 175184 KB Output is correct
75 Correct 311 ms 162620 KB Output is correct
76 Correct 502 ms 214608 KB Output is correct
77 Correct 593 ms 213772 KB Output is correct
78 Correct 458 ms 213764 KB Output is correct
79 Correct 155 ms 10836 KB Output is correct
80 Correct 172 ms 10072 KB Output is correct
81 Correct 134 ms 9556 KB Output is correct
82 Correct 531 ms 214372 KB Output is correct
83 Correct 506 ms 209004 KB Output is correct
84 Correct 605 ms 213592 KB Output is correct
85 Correct 608 ms 208136 KB Output is correct
86 Correct 469 ms 213588 KB Output is correct
87 Correct 486 ms 208468 KB Output is correct
88 Correct 157 ms 10796 KB Output is correct
89 Correct 150 ms 10792 KB Output is correct
90 Correct 169 ms 10064 KB Output is correct
91 Correct 169 ms 10020 KB Output is correct
92 Correct 137 ms 9676 KB Output is correct
93 Correct 153 ms 9500 KB Output is correct
94 Correct 273 ms 136572 KB Output is correct
95 Correct 279 ms 117176 KB Output is correct
96 Correct 375 ms 134996 KB Output is correct
97 Correct 362 ms 118352 KB Output is correct
98 Correct 251 ms 135368 KB Output is correct
99 Correct 233 ms 117916 KB Output is correct
100 Correct 157 ms 10836 KB Output is correct
101 Correct 154 ms 10832 KB Output is correct
102 Correct 172 ms 10132 KB Output is correct
103 Correct 160 ms 10016 KB Output is correct
104 Correct 134 ms 9556 KB Output is correct
105 Correct 140 ms 10052 KB Output is correct
106 Correct 312 ms 174968 KB Output is correct
107 Correct 338 ms 163408 KB Output is correct
108 Correct 436 ms 175272 KB Output is correct
109 Correct 487 ms 162624 KB Output is correct
110 Correct 295 ms 175444 KB Output is correct
111 Correct 317 ms 163132 KB Output is correct
112 Correct 153 ms 10832 KB Output is correct
113 Correct 153 ms 10828 KB Output is correct
114 Correct 165 ms 10052 KB Output is correct
115 Correct 167 ms 10032 KB Output is correct
116 Correct 135 ms 9552 KB Output is correct
117 Correct 133 ms 9512 KB Output is correct
118 Correct 480 ms 212920 KB Output is correct
119 Correct 283 ms 174540 KB Output is correct
120 Correct 303 ms 161624 KB Output is correct
121 Correct 458 ms 212624 KB Output is correct
122 Correct 285 ms 173940 KB Output is correct
123 Correct 299 ms 161424 KB Output is correct
124 Correct 464 ms 213164 KB Output is correct
125 Correct 284 ms 174840 KB Output is correct
126 Correct 305 ms 161272 KB Output is correct