oj.uz

답안 #62667

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
62667 2018-07-29T17:23:52 Z zetapi 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
0 / 100
 25 ms 23952 KB 
#include "garden.h"
#include "gardenlib.h"

#include <bits/stdc++.h>
using namespace std;

#define pb  push_back
#define mp  make_pair
#define	ll  long long
#define itr ::iterator 

typedef pair<int,int>  pii;

const int MAX=1e6;

vector<pii> vec[MAX];

ll P_,CycleLength,Min[MAX],Distance[MAX],deg[MAX],res[MAX];

void dfs(int node,int type,int dis)
{
	//cout<<node<<" "<<type<<" "<<dis<<" min bhi dekh lo "<<Min[node]<<"\n";
	if(node==P_ )
	{
      	if(type==1)
			CycleLength=dis;
		return ;
	}
	if(type==1 and Distance[node]==-1)
		Distance[node]=dis;
	if(type==2)
	{
		for(auto A:vec[node])
		{
			if(Min[node]==A.first)
				dfs(A.first,A.second,dis+1);
		}
		return ;
	}
	for(auto A:vec[node])
	{
		if(Min[node]==A.first and deg[node]==2)
			continue;
		dfs(A.first,A.second,dis+1);
	}
	return ;
}

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
	P_=P;
	int u,v;
	for(int A=0;A<N;A++)
		Distance[A]=-1,Min[A]=-1;
	for(int A=0;A<M;A++)
	{
		u=R[A][0];
		v=R[A][1];
		if(deg[u]<2)	
		{
			++deg[u];
			vec[v].pb(mp(u,deg[u]));
		}
		if(deg[v]<2)
		{
			++deg[v];
			vec[u].pb(mp(v,deg[v]));
		}
		if(Min[u]==-1)
			Min[u]=v;
		if(Min[v]==-1)
			Min[v]=u;
	}
	Distance[P]=0;
	for(auto A:vec[P])
		dfs(A.first,A.second,1);
	for(int B=0;B<Q;B++)
	{
		for(int A=0;A<N;A++)
		{
			if(Distance[A]==-1)
				continue;
			else if(CycleLength==0)
				res[B]+=Distance[A]==G[B];
			else if(G[B]-Distance[A]>=0 and (G[B]-Distance[A])%CycleLength==0)
				res[B]++;
		}
	}
	for(int A=0;A<Q;A++)
		answer(res[A]);
	//cout<<res;
	return ;
}

/*signed main()
{
	ios_base::sync_with_stdio(false);

	
	int G[]={3,1};
	int R[][2]={{1,0},{1,2},{3,2},{1,3},{4,2}};
	count_routes(5,5,2,R,2,G);
	return 0;
}*/

Subtask #1
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 21 ms 23952 KB Output is correct
3 Correct 25 ms 23928 KB Output is correct
4 Correct 24 ms 23900 KB Output is correct
5 Incorrect 24 ms 23800 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 21 ms 23952 KB Output is correct
3 Correct 25 ms 23928 KB Output is correct
4 Correct 24 ms 23900 KB Output is correct
5 Incorrect 24 ms 23800 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 21 ms 23952 KB Output is correct
3 Correct 25 ms 23928 KB Output is correct
4 Correct 24 ms 23900 KB Output is correct
5 Incorrect 24 ms 23800 KB Output isn't correct
6 Halted 0 ms 0 KB -