oj.uz

Submission #197165

# Submission time Handle Problem Language Result Execution time Memory
197165 2020-01-19T12:14:32 Z arnold518 Political Development (BOI17_politicaldevelopment) C++14
4 / 100
 122 ms 1784 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 = 5e4;

int N, K, ans=1;
vector<int> adj[MAXN+10];
bool vis[MAXN+10];

int main()
{
	int i, j, k, p;
	scanf("%d%d", &N, &K);
	for(i=1; i<=N; i++)
	{
		int s;
		scanf("%d", &s);
		while(s--) { int t; scanf("%d", &t); adj[i].push_back(t+1); }
	}
	for(i=1; i<=N; i++) sort(adj[i].begin(), adj[i].end());

	while(1)
	{
		pii t(987654321, 0);
		for(i=1; i<=N; i++) if(!vis[i]) t=min(t, pii(adj[i].size(), i));
		if(t.second==0) break;
		int now=t.second;

		vector<int> chd;
		for(auto it : adj[now]) chd.push_back(it);

		for(i=0; i<(1<<chd.size()); i++)
		{
			vector<int> V;
			for(j=0; j<chd.size(); j++) if(i&(1<<j)) V.push_back(chd[j]);
			bool flag=true;
			for(j=0; j<V.size(); j++)
			{
				for(k=j+1, p=0; k<V.size(); k++)
				{
					for(; p<adj[V[j]].size() && adj[V[j]][p]<=V[k]; p++);
					if(adj[V[j]][p]!=V[k]) flag=false;
				}
			}
			if(flag) ans=max(ans, (int)V.size()+1); 
		}
		vis[now]=true;
		for(auto it : chd) adj[it].erase(lower_bound(adj[it].begin(), adj[it].end(), now));
		adj[now].clear();
	}
	printf("%d", ans);
}

Compilation message

politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:39:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(j=0; j<chd.size(); j++) if(i&(1<<j)) V.push_back(chd[j]);
             ~^~~~~~~~~~~
politicaldevelopment.cpp:41:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(j=0; j<V.size(); j++)
             ~^~~~~~~~~
politicaldevelopment.cpp:43:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(k=j+1, p=0; k<V.size(); k++)
                     ~^~~~~~~~~
politicaldevelopment.cpp:45:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for(; p<adj[V[j]].size() && adj[V[j]][p]<=V[k]; p++);
            ~^~~~~~~~~~~~~~~~~
politicaldevelopment.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &K);
  ~~~~~^~~~~~~~~~~~~~~~
politicaldevelopment.cpp:21:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &s);
   ~~~~~^~~~~~~~~~
politicaldevelopment.cpp:22:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   while(s--) { int t; scanf("%d", &t); adj[i].push_back(t+1); }
                       ~~~~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 122 ms 1656 KB Output is correct
4 Correct 50 ms 1656 KB Output is correct
5 Correct 50 ms 1656 KB Output is correct
6 Correct 48 ms 1656 KB Output is correct
7 Correct 54 ms 1760 KB Output is correct
8 Correct 47 ms 1528 KB Output is correct
9 Correct 3 ms 1528 KB Output is correct
10 Correct 47 ms 1528 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 122 ms 1656 KB Output is correct
4 Correct 50 ms 1656 KB Output is correct
5 Correct 50 ms 1656 KB Output is correct
6 Correct 48 ms 1656 KB Output is correct
7 Correct 54 ms 1760 KB Output is correct
8 Correct 47 ms 1528 KB Output is correct
9 Correct 3 ms 1528 KB Output is correct
10 Correct 47 ms 1528 KB Output is correct
11 Correct 50 ms 1784 KB Output is correct
12 Correct 51 ms 1656 KB Output is correct
13 Correct 3 ms 1532 KB Output is correct
14 Correct 50 ms 1656 KB Output is correct
15 Incorrect 3 ms 1528 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 3 ms 1528 KB Output is correct
4 Correct 0 ms 1528 KB Output is correct
5 Incorrect 2 ms 1528 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 122 ms 1656 KB Output is correct
4 Correct 50 ms 1656 KB Output is correct
5 Correct 50 ms 1656 KB Output is correct
6 Correct 48 ms 1656 KB Output is correct
7 Correct 54 ms 1760 KB Output is correct
8 Correct 47 ms 1528 KB Output is correct
9 Correct 3 ms 1528 KB Output is correct
10 Correct 47 ms 1528 KB Output is correct
11 Correct 50 ms 1784 KB Output is correct
12 Correct 51 ms 1656 KB Output is correct
13 Correct 3 ms 1532 KB Output is correct
14 Correct 50 ms 1656 KB Output is correct
15 Incorrect 3 ms 1528 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 122 ms 1656 KB Output is correct
4 Correct 50 ms 1656 KB Output is correct
5 Correct 50 ms 1656 KB Output is correct
6 Correct 48 ms 1656 KB Output is correct
7 Correct 54 ms 1760 KB Output is correct
8 Correct 47 ms 1528 KB Output is correct
9 Correct 3 ms 1528 KB Output is correct
10 Correct 47 ms 1528 KB Output is correct
11 Correct 50 ms 1784 KB Output is correct
12 Correct 51 ms 1656 KB Output is correct
13 Correct 3 ms 1532 KB Output is correct
14 Correct 50 ms 1656 KB Output is correct
15 Incorrect 3 ms 1528 KB Output isn't correct
16 Halted 0 ms 0 KB -