oj.uz

Submission #311920

# Submission time Handle Problem Language Result Execution time Memory
311920 2020-10-12T02:44:23 Z arnold518 Bitaro’s Party (JOI18_bitaro) C++14
100 / 100
 1823 ms 176676 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 2e5;
const int SQ = 100;
const int INF = 1e9;

int N, M, Q;
vector<int> adj[MAXN+10];
int ans[MAXN+10];
int dp[MAXN+10];
int val[MAXN+10];

struct Data
{
	int T, P;
	vector<int> V;
};
Data A[MAXN+10];
vector<int> P[MAXN+10];

vector<pii> dp2[MAXN+10];
bool chk[MAXN+10];

int main()
{
	memset(ans, -1, sizeof(ans));
	scanf("%d%d%d", &N, &M, &Q);
	for(int i=1; i<=M; i++)
	{
		int u, v;
		scanf("%d%d", &u, &v);
		adj[v].push_back(u);
	}
	for(int i=1; i<=Q; i++)
	{
		int a, b;
		scanf("%d%d", &a, &b);
		A[i].T=a; A[i].P=i;
		while(b--)
		{
			int t;
			scanf("%d", &t);
			A[i].V.push_back(t);
		}

		if(A[i].V.size()>=SQ)
		{
			for(int j=1; j<=N; j++) dp[j]=0;
			for(auto it : A[i].V) dp[it]=-INF;
			for(int j=1; j<=N; j++) for(auto nxt : adj[j]) dp[j]=max(dp[j], dp[nxt]+1);
			if(dp[A[i].T]>=0) ans[i]=dp[A[i].T];
		}
		else P[A[i].T].push_back(i);
	}

	for(int now=1; now<=N; now++)
	{
		dp2[now].push_back({0, now});
		vector<int> V;
		for(auto nxt : adj[now])
		{
			for(auto it : dp2[nxt])
			{
				val[it.second]=max(val[it.second], it.first+1);
				V.push_back(it.second);
			}
		}
		
		for(auto it : V)
		{
			if(chk[it]) continue;
			chk[it]=true;
			dp2[now].push_back({val[it], it});
		}
		for(auto it : V) chk[it]=false;
		sort(dp2[now].begin(), dp2[now].end(), greater<pii>());
		while(dp2[now].size()>SQ) dp2[now].pop_back();
		for(auto it : V) val[it]=0;

		for(auto it : dp2[now]) chk[it.second]=false;
		for(auto it : P[now])
		{
			for(auto pt : A[it].V) chk[pt]=true;
			for(auto jt : dp2[now])
			{
				if(!chk[jt.second])
				{
					ans[it]=jt.first;
					break;
				}
			}
			for(auto pt : A[it].V) chk[pt]=false;
		}
	}

	for(int i=1; i<=Q; i++) printf("%d\n", ans[i]);
}

Compilation message

bitaro.cpp: In function 'int main()':
bitaro.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |  scanf("%d%d%d", &N, &M, &Q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
bitaro.cpp:36:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   36 |   scanf("%d%d", &u, &v);
      |   ~~~~~^~~~~~~~~~~~~~~~
bitaro.cpp:42:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   42 |   scanf("%d%d", &a, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~
bitaro.cpp:47:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   47 |    scanf("%d", &t);
      |    ~~~~~^~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 21504 KB Output is correct
2 Correct 15 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 18 ms 21504 KB Output is correct
5 Correct 19 ms 22016 KB Output is correct
6 Correct 20 ms 21904 KB Output is correct
7 Correct 19 ms 21888 KB Output is correct
8 Correct 21 ms 22528 KB Output is correct
9 Correct 21 ms 22528 KB Output is correct
10 Correct 21 ms 22528 KB Output is correct
11 Correct 21 ms 22400 KB Output is correct
12 Correct 21 ms 22400 KB Output is correct
13 Correct 21 ms 22400 KB Output is correct
14 Correct 20 ms 22144 KB Output is correct
15 Correct 20 ms 22144 KB Output is correct
16 Correct 21 ms 22144 KB Output is correct
17 Correct 21 ms 22272 KB Output is correct
18 Correct 21 ms 22144 KB Output is correct
19 Correct 21 ms 22272 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 21504 KB Output is correct
2 Correct 15 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 18 ms 21504 KB Output is correct
5 Correct 19 ms 22016 KB Output is correct
6 Correct 20 ms 21904 KB Output is correct
7 Correct 19 ms 21888 KB Output is correct
8 Correct 21 ms 22528 KB Output is correct
9 Correct 21 ms 22528 KB Output is correct
10 Correct 21 ms 22528 KB Output is correct
11 Correct 21 ms 22400 KB Output is correct
12 Correct 21 ms 22400 KB Output is correct
13 Correct 21 ms 22400 KB Output is correct
14 Correct 20 ms 22144 KB Output is correct
15 Correct 20 ms 22144 KB Output is correct
16 Correct 21 ms 22144 KB Output is correct
17 Correct 21 ms 22272 KB Output is correct
18 Correct 21 ms 22144 KB Output is correct
19 Correct 21 ms 22272 KB Output is correct
20 Correct 296 ms 23888 KB Output is correct
21 Correct 303 ms 24336 KB Output is correct
22 Correct 298 ms 23840 KB Output is correct
23 Correct 318 ms 24668 KB Output is correct
24 Correct 1020 ms 137200 KB Output is correct
25 Correct 1022 ms 134828 KB Output is correct
26 Correct 1016 ms 134708 KB Output is correct
27 Correct 772 ms 127232 KB Output is correct
28 Correct 773 ms 127220 KB Output is correct
29 Correct 776 ms 127092 KB Output is correct
30 Correct 774 ms 127092 KB Output is correct
31 Correct 924 ms 153844 KB Output is correct
32 Correct 764 ms 126964 KB Output is correct
33 Correct 632 ms 91768 KB Output is correct
34 Correct 830 ms 122636 KB Output is correct
35 Correct 626 ms 91384 KB Output is correct
36 Correct 718 ms 108172 KB Output is correct
37 Correct 983 ms 138976 KB Output is correct
38 Correct 709 ms 108532 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 21504 KB Output is correct
2 Correct 15 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 18 ms 21504 KB Output is correct
5 Correct 19 ms 22016 KB Output is correct
6 Correct 20 ms 21904 KB Output is correct
7 Correct 19 ms 21888 KB Output is correct
8 Correct 21 ms 22528 KB Output is correct
9 Correct 21 ms 22528 KB Output is correct
10 Correct 21 ms 22528 KB Output is correct
11 Correct 21 ms 22400 KB Output is correct
12 Correct 21 ms 22400 KB Output is correct
13 Correct 21 ms 22400 KB Output is correct
14 Correct 20 ms 22144 KB Output is correct
15 Correct 20 ms 22144 KB Output is correct
16 Correct 21 ms 22144 KB Output is correct
17 Correct 21 ms 22272 KB Output is correct
18 Correct 21 ms 22144 KB Output is correct
19 Correct 21 ms 22272 KB Output is correct
20 Correct 296 ms 23888 KB Output is correct
21 Correct 303 ms 24336 KB Output is correct
22 Correct 298 ms 23840 KB Output is correct
23 Correct 318 ms 24668 KB Output is correct
24 Correct 1020 ms 137200 KB Output is correct
25 Correct 1022 ms 134828 KB Output is correct
26 Correct 1016 ms 134708 KB Output is correct
27 Correct 772 ms 127232 KB Output is correct
28 Correct 773 ms 127220 KB Output is correct
29 Correct 776 ms 127092 KB Output is correct
30 Correct 774 ms 127092 KB Output is correct
31 Correct 924 ms 153844 KB Output is correct
32 Correct 764 ms 126964 KB Output is correct
33 Correct 632 ms 91768 KB Output is correct
34 Correct 830 ms 122636 KB Output is correct
35 Correct 626 ms 91384 KB Output is correct
36 Correct 718 ms 108172 KB Output is correct
37 Correct 983 ms 138976 KB Output is correct
38 Correct 709 ms 108532 KB Output is correct
39 Correct 1144 ms 142844 KB Output is correct
40 Correct 1038 ms 136916 KB Output is correct
41 Correct 1823 ms 137720 KB Output is correct
42 Correct 1195 ms 136452 KB Output is correct
43 Correct 1046 ms 138104 KB Output is correct
44 Correct 370 ms 26564 KB Output is correct
45 Correct 321 ms 26744 KB Output is correct
46 Correct 457 ms 26304 KB Output is correct
47 Correct 332 ms 25804 KB Output is correct
48 Correct 302 ms 25672 KB Output is correct
49 Correct 865 ms 134392 KB Output is correct
50 Correct 1491 ms 130112 KB Output is correct
51 Correct 369 ms 28864 KB Output is correct
52 Correct 457 ms 26392 KB Output is correct
53 Correct 804 ms 115088 KB Output is correct
54 Correct 1049 ms 144728 KB Output is correct
55 Correct 1507 ms 111096 KB Output is correct
56 Correct 1796 ms 144552 KB Output is correct
57 Correct 375 ms 29100 KB Output is correct
58 Correct 377 ms 28852 KB Output is correct
59 Correct 456 ms 26272 KB Output is correct
60 Correct 456 ms 26360 KB Output is correct
61 Correct 926 ms 130040 KB Output is correct
62 Correct 858 ms 111480 KB Output is correct
63 Correct 1130 ms 139640 KB Output is correct
64 Correct 1179 ms 130188 KB Output is correct
65 Correct 1133 ms 111228 KB Output is correct
66 Correct 1420 ms 142584 KB Output is correct
67 Correct 1473 ms 130040 KB Output is correct
68 Correct 1410 ms 111480 KB Output is correct
69 Correct 1706 ms 141816 KB Output is correct
70 Correct 784 ms 130168 KB Output is correct
71 Correct 727 ms 111224 KB Output is correct
72 Correct 977 ms 142196 KB Output is correct
73 Correct 812 ms 130040 KB Output is correct
74 Correct 751 ms 111224 KB Output is correct
75 Correct 1012 ms 143604 KB Output is correct
76 Correct 867 ms 134552 KB Output is correct
77 Correct 1475 ms 130580 KB Output is correct
78 Correct 784 ms 130336 KB Output is correct
79 Correct 373 ms 28820 KB Output is correct
80 Correct 454 ms 26404 KB Output is correct
81 Correct 297 ms 25588 KB Output is correct
82 Correct 853 ms 134332 KB Output is correct
83 Correct 1040 ms 166356 KB Output is correct
84 Correct 1480 ms 130468 KB Output is correct
85 Correct 1711 ms 176676 KB Output is correct
86 Correct 791 ms 130296 KB Output is correct
87 Correct 983 ms 162296 KB Output is correct
88 Correct 367 ms 28844 KB Output is correct
89 Correct 370 ms 28772 KB Output is correct
90 Correct 461 ms 26292 KB Output is correct
91 Correct 462 ms 26580 KB Output is correct
92 Correct 304 ms 25408 KB Output is correct
93 Correct 301 ms 25412 KB Output is correct
94 Correct 720 ms 99192 KB Output is correct
95 Correct 958 ms 136056 KB Output is correct
96 Correct 1303 ms 95252 KB Output is correct
97 Correct 1606 ms 133368 KB Output is correct
98 Correct 644 ms 95188 KB Output is correct
99 Correct 875 ms 129400 KB Output is correct
100 Correct 391 ms 29060 KB Output is correct
101 Correct 397 ms 29224 KB Output is correct
102 Correct 480 ms 26600 KB Output is correct
103 Correct 474 ms 26944 KB Output is correct
104 Correct 324 ms 25804 KB Output is correct
105 Correct 321 ms 25932 KB Output is correct
106 Correct 809 ms 115448 KB Output is correct
107 Correct 1073 ms 150868 KB Output is correct
108 Correct 1458 ms 112000 KB Output is correct
109 Correct 1721 ms 136956 KB Output is correct
110 Correct 749 ms 111736 KB Output is correct
111 Correct 999 ms 143984 KB Output is correct
112 Correct 373 ms 29032 KB Output is correct
113 Correct 371 ms 28840 KB Output is correct
114 Correct 456 ms 26632 KB Output is correct
115 Correct 456 ms 26516 KB Output is correct
116 Correct 291 ms 25404 KB Output is correct
117 Correct 301 ms 25520 KB Output is correct
118 Correct 762 ms 129912 KB Output is correct
119 Correct 726 ms 111480 KB Output is correct
120 Correct 1012 ms 147424 KB Output is correct
121 Correct 775 ms 130092 KB Output is correct
122 Correct 724 ms 111224 KB Output is correct
123 Correct 1000 ms 146636 KB Output is correct
124 Correct 761 ms 129588 KB Output is correct
125 Correct 719 ms 111480 KB Output is correct
126 Correct 966 ms 142712 KB Output is correct