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답안 #64765

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
64765 2018-08-05T14:55:07 Z TadijaSebez 열대 식물원 (Tropical Garden) (IOI11_garden) C++11
49 / 100
 141 ms 27232 KB 
#include "garden.h"
#include "gardenlib.h"
#include <stdio.h>
#include <vector>
#include <algorithm>
using namespace std;
#define pb push_back
const int N=150050;
const int M=2*N;
//---------------------//
/*
void answer(int x){ printf("%i\n",x);}
*/
//---------------------//
int go[M],lo[M],dep[M];
vector<int> E[M];
void DFS(int u, int p)
{
	for(int i=0;i<E[u].size();i++)
	{
		int v=E[u][i];
		dep[v]=dep[u]+1;
		if(v!=p) DFS(v,p);
	}
}
pair<int,int> Qs[N];
int cnt[M],sol[N];
void count_routes(int n, int m, int p, int r[][2], int q, int k[])
{
	int i,j;
	for(i=0;i<q;i++) Qs[i].first=k[i],Qs[i].second=i;
	sort(Qs,Qs+q);
	for(i=0;i<n*2;i++) lo[i]=-1;
	for(i=0;i<n*2;i++) go[i]=-1;
	for(i=0;i<m;i++)
	{
		if(lo[r[i][0]<<1]==-1) lo[r[i][0]<<1]=i;
		else if(lo[r[i][0]<<1|1]==-1) lo[r[i][0]<<1|1]=i;
		if(lo[r[i][1]<<1]==-1) lo[r[i][1]<<1]=i;
		else if(lo[r[i][1]<<1|1]==-1) lo[r[i][1]<<1|1]=i;
	}
	for(i=0;i<n*2;i++)
	{
		int x=lo[i];
		if(lo[i]==-1) x=lo[i^1];
		int v=r[x][0];
		if(v==i/2) v=r[x][1];
		if(x==lo[v<<1]) go[i]=v<<1|1;
		else go[i]=v<<1;
	}
	for(i=0;i<2*n;i++)
	{
		E[go[i]].pb(i);
		//printf("%i -> %i\n",go[i],i);
		dep[i]=-1;
	}
	dep[p<<1]=0;
	DFS(p<<1,p<<1);
	if(dep[p<<1]==0)
	{
		for(i=0;i<2*n;i+=2) if(dep[i]!=-1) cnt[dep[i]]++;
		for(i=0;i<q;i++) sol[i]+=cnt[k[i]];
		for(i=0;i<2*n;i+=2) if(dep[i]!=-1) cnt[dep[i]]--;
	}
	else
	{
		int cyc=dep[p<<1];
		j=0;
		vector<int> Ds;
		for(i=0;i<2*n;i+=2) if(dep[i]!=-1) Ds.pb(dep[i]);
		sort(Ds.begin(),Ds.end());
		for(i=0;i<q;i++)
		{
			while(j<Ds.size() && Ds[j]<=Qs[i].first) cnt[Ds[j]%cyc]++,j++;
			sol[Qs[i].second]+=cnt[Qs[i].first%cyc];
		}
		for(i=0;i<cyc;i++) cnt[i]=0;
	}
	for(i=0;i<2*n;i++) dep[i]=-1;
	dep[p<<1|1]=0;
	DFS(p<<1|1,p<<1|1);
	if(dep[p<<1|1]==0)
	{
		for(i=0;i<2*n;i+=2) if(dep[i]!=-1) cnt[dep[i]]++;
		for(i=0;i<q;i++) sol[i]+=cnt[k[i]];
		for(i=0;i<2*n;i+=2) if(dep[i]!=-1) cnt[dep[i]]--;
	}
	else
	{
		int cyc=dep[p<<1|1];
		//printf("%i :D\n",cyc);
		j=0;
		vector<int> Ds;
		for(i=0;i<2*n;i+=2) if(dep[i]!=-1) Ds.pb(dep[i]);
		sort(Ds.begin(),Ds.end());
		for(i=0;i<q;i++)
		{
			while(j<Ds.size() && Ds[j]<=Qs[i].first) cnt[Ds[j]%cyc]++,j++;
			sol[Qs[i].second]+=cnt[Qs[i].first%cyc];
		}
		for(i=0;i<cyc;i++) cnt[i]=0;
	}
	for(i=0;i<q;i++) answer(sol[i]);
}
//---------------------//
/*
int r[N][2],k[N];
int main()
{
	int n,m,p,q,i;
	scanf("%i %i %i",&n,&m,&p);
	for(i=0;i<m;i++) scanf("%i %i",&r[i][0],&r[i][1]);
	scanf("%i",&q);
	for(i=0;i<q;i++) scanf("%i",&k[i]);
	count_routes(n,m,p,r,q,k);
	return 0;
}
*/
//---------------------//

Compilation message

garden.cpp: In function 'void DFS(int, int)':
garden.cpp:19:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<E[u].size();i++)
              ~^~~~~~~~~~~~
garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:74:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(j<Ds.size() && Ds[j]<=Qs[i].first) cnt[Ds[j]%cyc]++,j++;
          ~^~~~~~~~~~
garden.cpp:98:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(j<Ds.size() && Ds[j]<=Qs[i].first) cnt[Ds[j]%cyc]++,j++;
          ~^~~~~~~~~~

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7568 KB Output is correct
2 Correct 8 ms 7484 KB Output is correct
3 Correct 8 ms 7544 KB Output is correct
4 Correct 8 ms 7416 KB Output is correct
5 Correct 8 ms 7396 KB Output is correct
6 Correct 9 ms 7640 KB Output is correct
7 Correct 8 ms 7388 KB Output is correct
8 Correct 9 ms 7484 KB Output is correct
9 Correct 7 ms 7544 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7568 KB Output is correct
2 Correct 8 ms 7484 KB Output is correct
3 Correct 8 ms 7544 KB Output is correct
4 Correct 8 ms 7416 KB Output is correct
5 Correct 8 ms 7396 KB Output is correct
6 Correct 9 ms 7640 KB Output is correct
7 Correct 8 ms 7388 KB Output is correct
8 Correct 9 ms 7484 KB Output is correct
9 Correct 7 ms 7544 KB Output is correct
10 Correct 9 ms 7376 KB Output is correct
11 Correct 19 ms 9148 KB Output is correct
12 Correct 33 ms 10052 KB Output is correct
13 Correct 73 ms 24848 KB Output is correct
14 Correct 104 ms 17296 KB Output is correct
15 Correct 141 ms 18368 KB Output is correct
16 Correct 111 ms 15508 KB Output is correct
17 Runtime error 83 ms 27232 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7568 KB Output is correct
2 Correct 8 ms 7484 KB Output is correct
3 Correct 8 ms 7544 KB Output is correct
4 Correct 8 ms 7416 KB Output is correct
5 Correct 8 ms 7396 KB Output is correct
6 Correct 9 ms 7640 KB Output is correct
7 Correct 8 ms 7388 KB Output is correct
8 Correct 9 ms 7484 KB Output is correct
9 Correct 7 ms 7544 KB Output is correct
10 Correct 9 ms 7376 KB Output is correct
11 Correct 19 ms 9148 KB Output is correct
12 Correct 33 ms 10052 KB Output is correct
13 Correct 73 ms 24848 KB Output is correct
14 Correct 104 ms 17296 KB Output is correct
15 Correct 141 ms 18368 KB Output is correct
16 Correct 111 ms 15508 KB Output is correct
17 Runtime error 83 ms 27232 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -