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Submission #393567

# Submission time Handle Problem Language Result Execution time Memory
393567 2021-04-24T03:38:32 Z tinjyu Simurgh (IOI17_simurgh) C++14
13 / 100
 3000 ms 4980 KB 
#include "simurgh.h"
#include <iostream>
#include <vector>
using namespace std;
long long int val[100005],n,road[100005],map[1000005][2],m,cnt,tagv[1000005],tage[1000005],deg[100005],used[100005];
vector<int> r,r1;
int add(int a,int b)
{
	map[cnt][0]=b;
	map[cnt][1]=road[a];
	road[a]=cnt;
	cnt++;
	map[cnt][0]=a;
	map[cnt][1]=road[b];
	road[b]=cnt;
	cnt++;
	return 0;
}
long long int dfs(int x,int y)
{
	//cout<<x<<endl;
	tagv[x]=1;
	long long int g=road[x];
	while(g!=-1)
	{
		long long int now=map[g][0];
		//cout<<x<<" "<<now<<" "<<g<<endl;
		if(used[g/2]==0 && tagv[now]==0)
		{
			used[g/2]=1;
			if(now==y)
			{
				r.push_back(g/2);
				return 0;
			}
			int tmp=dfs(now,y);
			if(tmp==0)
			{
				r.push_back(g/2);
				return 0;
			}
			used[g/2]=0;
		}
		g=map[g][1];
	}
	tagv[x]=0;
	return 1;
}
int dfs1(int x)
{
	tagv[x]=1;
	long long int g=road[x];
	while(g!=-1)
	{
		long long int now=map[g][0];
		if(tagv[now]==0)
		{
			r1.push_back(g/2);
			dfs1(now);
		}
		g=map[g][1];
	}
	return 0;
}
std::vector<int> find_roads(int N, std::vector<int> u, std::vector<int> v) {
	n=N;
	for(int i=0;i<n;i++)road[i]=-1;
	m=u.size();
	for(int i=0;i<m;i++)
	{
		add(u[i],v[i]);
		//cout<<u[i]<<" "<<v[i]<<" "<<map[i*2][0]<<" "<<map[i*2+1][0]<<endl;
	}
	vector<int> ans;
	vector<int> ask;
	for(int t=0;t<n;t++)
	{
		//cout<<i<<endl;
		long long int g=road[t];
		while(g!=-1)
		{
			long long int now=map[g][0];
			if(tage[g/2]==0)
			{
				for(int j=0;j<m;j++)used[j]=0;
				//cout<<t<<" "<<g/2<<endl;
				for(int j=0;j<n;j++)
				{
					tagv[j]=0;
				}
				r.clear();
				r1.clear();
				ask.clear();
				used[g/2]=1;
				long long int tmp=dfs(now,t);
				//for(int i=0;i<r.size();i++)cout<<r[i]<<" ";
				//cout<<endl;
				if(r.size()==0)
				{
					ans.push_back(g/2);
					tage[g/2]=1;
				}
				else
				{
					r.push_back(g/2);
					for(int i=0;i<n;i++)tagv[i]=0;
					for(int i=0;i<r.size();i++)
					{
						//cout<<r[i]<<" "<<u[r[i]]<<" "<<v[r[i]]<<endl;
						tagv[u[r[i]]]=1;
						tagv[v[r[i]]]=1;
					}
					for(int i=0;i<r.size();i++)
					{
						dfs1(u[r[i]]);
						//cout<<"ok"<<endl;
						dfs1(v[r[i]]);
					}
					long long int mi=9999999;
					long long int c=0;
					for(int i=0;i<r.size();i++)
					{
						ask.clear();
						for(int j=0;j<r.size();j++)
						{
							if(i==j)continue;
							ask.push_back(r[j]);
						}
						for(int j=0;j<r1.size();j++)
						{
							ask.push_back(r1[j]);
						}
						//cout<<"ask"<<endl;
						//for(int j=0;j<ask.size();j++)cout<<ask[j]<<" ";
						//cout<<endl; 
						val[i]=count_common_roads(ask);
						//cout<<val[i]<<endl;0
						mi=min(mi,val[i]);
					}
					for(int i=0;i<r.size();i++)
					{
						if(val[i]!=mi)c=1;
					}
					if(c==1)
					{
						for(int i=0;i<r.size();i++)
						{
							if(val[i]==mi)
							{
									if(tage[r[i]]==0)ans.push_back(r[i]);
							}
							
						}
					}
					for(int i=0;i<r.size();i++)tage[r[i]]=1;
				}
			}
			g=map[g][1];
		}
	}
	//cout<<"ans"<<endl;
	//for(int i=0;i<ans.size();i++)cout<<ans[i]<<" ";
	//cout<<endl; 
	return ans;
}

Compilation message

simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:107:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:113:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  113 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:121:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:124:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |       for(int j=0;j<r.size();j++)
      |                   ~^~~~~~~~~
simurgh.cpp:129:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |       for(int j=0;j<r1.size();j++)
      |                   ~^~~~~~~~~~
simurgh.cpp:140:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  140 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:146:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  146 |       for(int i=0;i<r.size();i++)
      |                   ~^~~~~~~~~
simurgh.cpp:155:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  155 |      for(int i=0;i<r.size();i++)tage[r[i]]=1;
      |                  ~^~~~~~~~~
simurgh.cpp:95:19: warning: unused variable 'tmp' [-Wunused-variable]
   95 |     long long int tmp=dfs(now,t);
      |                   ^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB correct
2 Correct 1 ms 332 KB correct
3 Correct 1 ms 332 KB correct
4 Correct 1 ms 332 KB correct
5 Correct 1 ms 332 KB correct
6 Correct 1 ms 332 KB correct
7 Correct 1 ms 332 KB correct
8 Correct 1 ms 332 KB correct
9 Correct 1 ms 332 KB correct
10 Correct 1 ms 248 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 332 KB correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB correct
2 Correct 1 ms 332 KB correct
3 Correct 1 ms 332 KB correct
4 Correct 1 ms 332 KB correct
5 Correct 1 ms 332 KB correct
6 Correct 1 ms 332 KB correct
7 Correct 1 ms 332 KB correct
8 Correct 1 ms 332 KB correct
9 Correct 1 ms 332 KB correct
10 Correct 1 ms 248 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 332 KB correct
14 Correct 58 ms 332 KB correct
15 Correct 58 ms 404 KB correct
16 Correct 57 ms 332 KB correct
17 Correct 40 ms 412 KB correct
18 Correct 9 ms 332 KB correct
19 Correct 42 ms 396 KB correct
20 Correct 40 ms 400 KB correct
21 Correct 35 ms 332 KB correct
22 Execution timed out 3072 ms 332 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB correct
2 Correct 1 ms 332 KB correct
3 Correct 1 ms 332 KB correct
4 Correct 1 ms 332 KB correct
5 Correct 1 ms 332 KB correct
6 Correct 1 ms 332 KB correct
7 Correct 1 ms 332 KB correct
8 Correct 1 ms 332 KB correct
9 Correct 1 ms 332 KB correct
10 Correct 1 ms 248 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 332 KB correct
14 Correct 58 ms 332 KB correct
15 Correct 58 ms 404 KB correct
16 Correct 57 ms 332 KB correct
17 Correct 40 ms 412 KB correct
18 Correct 9 ms 332 KB correct
19 Correct 42 ms 396 KB correct
20 Correct 40 ms 400 KB correct
21 Correct 35 ms 332 KB correct
22 Execution timed out 3072 ms 332 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB correct
2 Correct 1 ms 332 KB correct
3 Incorrect 484 ms 4980 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB correct
2 Correct 1 ms 332 KB correct
3 Correct 1 ms 332 KB correct
4 Correct 1 ms 332 KB correct
5 Correct 1 ms 332 KB correct
6 Correct 1 ms 332 KB correct
7 Correct 1 ms 332 KB correct
8 Correct 1 ms 332 KB correct
9 Correct 1 ms 332 KB correct
10 Correct 1 ms 248 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 332 KB correct
14 Correct 58 ms 332 KB correct
15 Correct 58 ms 404 KB correct
16 Correct 57 ms 332 KB correct
17 Correct 40 ms 412 KB correct
18 Correct 9 ms 332 KB correct
19 Correct 42 ms 396 KB correct
20 Correct 40 ms 400 KB correct
21 Correct 35 ms 332 KB correct
22 Execution timed out 3072 ms 332 KB Time limit exceeded
23 Halted 0 ms 0 KB -