Submission #123344

#	Time	Username	Problem	Language	Result	Execution time	Memory
123344		baluteshih	Tropical Garden (IOI11_garden)	C++14	49 / 100	5053 ms	4856 KiB

garden

#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
#define jizz ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define pb push_back
#define ET cout << "\n"
#define MEM(i,j) memset(i,j,sizeof i)
#define F first
#define S second
#define MP make_pair
#define ALL(v) v.begin(),v.end()
#define DB(a,s,e) {for(int i=s;i<e;++i) cout << a[i] << " ";ET;}
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

vector<int> Gr[150005];
int to[300005];

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
	for(int i=0;i<M;++i)
		Gr[R[i][0]].pb(R[i][1]),Gr[R[i][1]].pb(R[i][0]);
	for(int i=0;i<N;++i)
	{
		if(i==Gr[Gr[i][0]][0])
			to[i<<1]=Gr[i][0]<<1|1;
		else
			to[i<<1]=Gr[i][0]<<1;
		if(Gr[i].size()>1)
			if(i==Gr[Gr[i][1]][0])
				to[i<<1|1]=Gr[i][1]<<1|1;
			else
				to[i<<1|1]=Gr[i][1]<<1;
		else
			if(i==Gr[Gr[i][0]][0])
				to[i<<1|1]=Gr[i][0]<<1|1;
			else
				to[i<<1|1]=Gr[i][0]<<1;
	}
	for(int i=0;i<Q;++i)
	{
		int ans=0;
		for(int j=0;j<N;++j)
		{
			int nw=j<<1;
			for(int k=0;k<G[i];++k)
				nw=to[nw];
			if((nw>>1)==P) ++ans;
		}
		answer(ans);
	}
}

• Subtask 1: 49 / 49
• Subtask 2: 0 / 20
• Subtask 3: 0 / 31