Submission #62496

#	Time	Username	Problem	Language	Result	Execution time	Memory
62496		zetapi	Parachute rings (IOI12_rings)	C++14	Compilation error	0 ms	0 KiB

rings

#include "bits/stdc++.h"

const int MAX=1e6+99;
 
vector<int> vec[MAX];

pii E[MAX];

int linear[4],destruct[4],deg[4][MAX],OtherEnd[4][MAX];
 
int N,M,cnt,CycleSize,Quad,a,b,lol,size_[MAX];

void Init(int N_) 
{
	M=0;
  	N=N_;
  	cnt=0;
  	Quad=0;
  	CycleSize=0;
  	for(int A=0;A<N;A++)
  	{
  		size_[A]=1;
  		deg[0][A]=0;
  		OtherEnd[0][A]=A;
  		vec[A].clear();
  	}
  	return ;
}
 
void Add(int X,int Y)
{
	for(int A=0;A<4;A++) 	
	{
		if(!linear[A] or destruct[A]==X or destruct[A]==Y)
			continue;
		deg[A][X]++;
		deg[A][Y]++;
		if(deg[A][X]==3 or deg[A][Y]==3 or OtherEnd[A][X]==Y)
		{
			linear[A]=0;
			continue;
		}
		a=OtherEnd[A][X];
		b=OtherEnd[A][Y];
		OtherEnd[A][X]=-1;
		OtherEnd[A][Y]=-1;
		OtherEnd[A][a]=b;
		OtherEnd[A][b]=a;
	}
	return ;
}
 
void Split(int X)
{
	Quad=1;
	destruct[0]=X;
	destruct[1]=vec[X][0];
	destruct[2]=vec[X][1];
	destruct[3]=vec[X][2];
	for(int A=0;A<4;A++)
	{
		linear[A]=1;
		for(int B=0;B<N;B++)
		{
			deg[A][B]=0;
			OtherEnd[A][B]=B;
		}
	}
	for(int A=0;A<M;A++)
		Add(E[A].first,E[A].second);
	return ;	
}
 
void Link(int X,int Y) 
{
	if(cnt>2)
		return ;
	if(Quad==0)
	{
		vec[X].push_back(Y);
		vec[Y].push_back(X);
		deg[0][X]++;
		deg[0][Y]++;
		if(deg[0][X]==3)
		{
			Split(X);
			return ;
		}
		if(deg[0][Y]==3)
		{
			Split(Y);
			return ;
		}
		if(OtherEnd[0][X]!=Y)
		{
			lol=size_[a];
			size_[a]=lol+size_[b];
			size_[b]=lol+size_[b];
			a=OtherEnd[0][X];
			b=OtherEnd[0][Y];
			OtherEnd[0][X]=-1;
			OtherEnd[0][Y]=-1;
			OtherEnd[0][a]=b;
			OtherEnd[0][b]=a;
			return ;
		}
		cnt++;
		if(cnt==1)
			CycleSize=size_[Y];
	}
	else
		Add(X,Y);
	return ;
}
 
int CountCritical() 
{	
	if(!Quad)
	{
		if(cnt>1)
			return 0;
		else if(CycleSize)
			return CycleSize;
		else
			return N;
	}
	else
		return (linear[0]+linear[1]+linear[2]+linear[3]);
}

Compilation message (stderr)

rings.cpp:5:1: error: 'vector' does not name a type; did you mean 'wctob'?
 vector<int> vec[MAX];
 ^~~~~~
 wctob
rings.cpp:7:1: error: 'pii' does not name a type
 pii E[MAX];
 ^~~
rings.cpp: In function 'void Init(int)':
rings.cpp:25:5: error: 'vec' was not declared in this scope
     vec[A].clear();
     ^~~
rings.cpp: In function 'void Split(int)':
rings.cpp:57:14: error: 'vec' was not declared in this scope
  destruct[1]=vec[X][0];
              ^~~
rings.cpp:70:7: error: 'E' was not declared in this scope
   Add(E[A].first,E[A].second);
       ^
rings.cpp: In function 'void Link(int, int)':
rings.cpp:80:3: error: 'vec' was not declared in this scope
   vec[X].push_back(Y);
   ^~~