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Submission #393568

# Submission time Handle Problem Language Result Execution time Memory
393568 2021-04-24T03:41:35 Z tinjyu Simurgh (IOI17_simurgh) C++14
30 / 100
 565 ms 5000 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];
	}
	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:106:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:112:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:120:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:123:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |       for(int j=0;j<r.size();j++)
      |                   ~^~~~~~~~~
simurgh.cpp:128:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |       for(int j=0;j<r1.size();j++)
      |                   ~^~~~~~~~~~
simurgh.cpp:139:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  139 |      for(int i=0;i<r.size();i++)
      |                  ~^~~~~~~~~
simurgh.cpp:145:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  145 |       for(int i=0;i<r.size();i++)
      |                   ~^~~~~~~~~
simurgh.cpp:154:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  154 |      for(int i=0;i<r.size();i++)tage[r[i]]=1;
      |                  ~^~~~~~~~~
simurgh.cpp:94:19: warning: unused variable 'tmp' [-Wunused-variable]
   94 |     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 332 KB correct
11 Correct 1 ms 332 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 336 KB correct

Subtask #2
17.0 / 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 332 KB correct
11 Correct 1 ms 332 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 336 KB correct
14 Correct 59 ms 392 KB correct
15 Correct 59 ms 332 KB correct
16 Correct 60 ms 408 KB correct
17 Correct 41 ms 452 KB correct
18 Correct 10 ms 332 KB correct
19 Correct 42 ms 384 KB correct
20 Correct 39 ms 332 KB correct
21 Correct 36 ms 396 KB correct
22 Correct 19 ms 332 KB correct
23 Correct 14 ms 332 KB correct
24 Correct 13 ms 380 KB correct
25 Correct 1 ms 332 KB correct
26 Correct 13 ms 380 KB correct
27 Correct 15 ms 384 KB correct
28 Correct 5 ms 332 KB correct
29 Correct 2 ms 332 KB correct
30 Correct 14 ms 332 KB correct
31 Correct 23 ms 380 KB correct
32 Correct 23 ms 384 KB correct
33 Correct 20 ms 388 KB correct

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 332 KB correct
11 Correct 1 ms 332 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 336 KB correct
14 Correct 59 ms 392 KB correct
15 Correct 59 ms 332 KB correct
16 Correct 60 ms 408 KB correct
17 Correct 41 ms 452 KB correct
18 Correct 10 ms 332 KB correct
19 Correct 42 ms 384 KB correct
20 Correct 39 ms 332 KB correct
21 Correct 36 ms 396 KB correct
22 Correct 19 ms 332 KB correct
23 Correct 14 ms 332 KB correct
24 Correct 13 ms 380 KB correct
25 Correct 1 ms 332 KB correct
26 Correct 13 ms 380 KB correct
27 Correct 15 ms 384 KB correct
28 Correct 5 ms 332 KB correct
29 Correct 2 ms 332 KB correct
30 Correct 14 ms 332 KB correct
31 Correct 23 ms 380 KB correct
32 Correct 23 ms 384 KB correct
33 Correct 20 ms 388 KB correct
34 Incorrect 565 ms 2328 KB WA in grader: NO
35 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 505 ms 5000 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 332 KB correct
11 Correct 1 ms 332 KB correct
12 Correct 1 ms 332 KB correct
13 Correct 1 ms 336 KB correct
14 Correct 59 ms 392 KB correct
15 Correct 59 ms 332 KB correct
16 Correct 60 ms 408 KB correct
17 Correct 41 ms 452 KB correct
18 Correct 10 ms 332 KB correct
19 Correct 42 ms 384 KB correct
20 Correct 39 ms 332 KB correct
21 Correct 36 ms 396 KB correct
22 Correct 19 ms 332 KB correct
23 Correct 14 ms 332 KB correct
24 Correct 13 ms 380 KB correct
25 Correct 1 ms 332 KB correct
26 Correct 13 ms 380 KB correct
27 Correct 15 ms 384 KB correct
28 Correct 5 ms 332 KB correct
29 Correct 2 ms 332 KB correct
30 Correct 14 ms 332 KB correct
31 Correct 23 ms 380 KB correct
32 Correct 23 ms 384 KB correct
33 Correct 20 ms 388 KB correct
34 Incorrect 565 ms 2328 KB WA in grader: NO
35 Halted 0 ms 0 KB -