Submission #302867

#	Time	Username	Problem	Language	Result	Execution time	Memory
302867		nadidadit	Connecting Supertrees (IOI20_supertrees)	C++17	Compilation error	0 ms	0 KiB

supertrees

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n;
	int arra[n][n],adit[n],ans[n][n];
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
			ans[i][j]=0;
			adit[i]=0;
		}
	}
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
		cin>>arra[i][j];
	    }
	}
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
			if(arra[i][j]!=arra[j][i])
			{
				cout<<"BYE"<<endl;
				return 0;
			}
		}
	}
	for(int i=0;i<n;i++)
	{
		if(arra[i][i]!=1)
		{
			cout<<"Biday"<<endl;
			return 0;
		}
	}
	int count=0,past;
	for(int i=0;i<n;i++)
	{
		vector<int>check;
		check.push_back(i);
		if(adit[i]==0)
		{
		for(int j=0;j<n;j++)
		{
			if(arra[i][j]==2)
			{
				if(adit[j]==1)
				{
					cout<<"Bad Luck"<<endl;
					return 0;
				}
			//	cout<<"i= "<<i<<" j= "<<j<<" past= "<<past<<" count= "<<count<<" adit["<<i<<"]= "<<adit[i]<<" adit["<<j<<"]= "<<adit[j]<<" adit["<<past<<"]= "<<adit[past]<<endl;
			//    cout<<"arra["<<i<<"]["<<j<<"]= "<<arra[i][j]<<endl;
				check.push_back(j);
			}
		}
			if(check.size()>2)
			{
			//	cout<<"size= "<<check.size()<<endl;
			  for(int i=0;i<check.size();i++)
				{
					cout<<check[i]<<" ";
				}
				cout<<endl;
				for(int i=0;i<check.size()-1;i++)
				{
							
					ans[check[i]][check[i+1]]=1;
					adit[check[i]]=1;
					ans[check[i+1]][check[i]]=1;
				}
				adit[check[check.size()-1]]=1;
				ans[check[0]][check[check.size()-1]]=1;
				ans[check[check.size()-1]][0]=1;
				for(int i=0;i<check.size();i++)
				{
					for(int j=0;j<check.size();j++)
					{
						if(i!=j)
						{
						if(arra[check[i]][check[j]]!=2 || arra[check[i]][check[j]]!=2)
						{
							cout<<"NO"<<endl;
							return 0;
						}
						else
						{
						arra[check[i]][check[j]]=0;
						arra[check[j]][check[i]]=0;
					    }
					    }
					}
				}
			}
			check.clear();
	}
	}
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
			if(i!=j && arra[i][j]==2)
			{
		    	cout<<"Bye Bye"<<endl;
				return 0;
			}
		}
	}
	/*	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
		//	cout<<arra[i][j]<<" ";
		}
		cout<<endl;
	}*/
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
		{
			cout<<ans[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
}

Compilation message (stderr)

supertrees.cpp: In function 'int main()':
supertrees.cpp:66:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |      for(int i=0;i<check.size();i++)
      |                  ~^~~~~~~~~~~~~
supertrees.cpp:71:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |     for(int i=0;i<check.size()-1;i++)
      |                 ~^~~~~~~~~~~~~~~
supertrees.cpp:81:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |     for(int i=0;i<check.size();i++)
      |                 ~^~~~~~~~~~~~~
supertrees.cpp:83:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |      for(int j=0;j<check.size();j++)
      |                  ~^~~~~~~~~~~~~
supertrees.cpp:42:6: warning: unused variable 'count' [-Wunused-variable]
   42 |  int count=0,past;
      |      ^~~~~
supertrees.cpp:42:14: warning: unused variable 'past' [-Wunused-variable]
   42 |  int count=0,past;
      |              ^~~~
/tmp/ccACRI6N.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccq8rvTy.o:supertrees.cpp:(.text.startup+0x0): first defined here
/tmp/ccACRI6N.o: In function `main':
grader.cpp:(.text.startup+0x3b2): undefined reference to `construct(std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'
collect2: error: ld returned 1 exit status