oj.uz

답안 #64769

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
64769 2018-08-05T15:08:00 Z TadijaSebez 열대 식물원 (Tropical Garden) (IOI11_garden) C++11
49 / 100
 132 ms 26500 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];
		if(dep[v]>0) continue; 
		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:75:11: 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:99:11: 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 9 ms 7544 KB Output is correct
2 Correct 9 ms 7544 KB Output is correct
3 Correct 9 ms 7516 KB Output is correct
4 Correct 8 ms 7412 KB Output is correct
5 Correct 8 ms 7416 KB Output is correct
6 Correct 9 ms 7544 KB Output is correct
7 Correct 8 ms 7388 KB Output is correct
8 Correct 8 ms 7416 KB Output is correct
9 Correct 11 ms 7452 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 7544 KB Output is correct
2 Correct 9 ms 7544 KB Output is correct
3 Correct 9 ms 7516 KB Output is correct
4 Correct 8 ms 7412 KB Output is correct
5 Correct 8 ms 7416 KB Output is correct
6 Correct 9 ms 7544 KB Output is correct
7 Correct 8 ms 7388 KB Output is correct
8 Correct 8 ms 7416 KB Output is correct
9 Correct 11 ms 7452 KB Output is correct
10 Correct 8 ms 7392 KB Output is correct
11 Correct 18 ms 9080 KB Output is correct
12 Correct 32 ms 10128 KB Output is correct
13 Correct 72 ms 24852 KB Output is correct
14 Correct 106 ms 16416 KB Output is correct
15 Correct 132 ms 17596 KB Output is correct
16 Correct 109 ms 14736 KB Output is correct
17 Runtime error 81 ms 26500 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 9 ms 7544 KB Output is correct
2 Correct 9 ms 7544 KB Output is correct
3 Correct 9 ms 7516 KB Output is correct
4 Correct 8 ms 7412 KB Output is correct
5 Correct 8 ms 7416 KB Output is correct
6 Correct 9 ms 7544 KB Output is correct
7 Correct 8 ms 7388 KB Output is correct
8 Correct 8 ms 7416 KB Output is correct
9 Correct 11 ms 7452 KB Output is correct
10 Correct 8 ms 7392 KB Output is correct
11 Correct 18 ms 9080 KB Output is correct
12 Correct 32 ms 10128 KB Output is correct
13 Correct 72 ms 24852 KB Output is correct
14 Correct 106 ms 16416 KB Output is correct
15 Correct 132 ms 17596 KB Output is correct
16 Correct 109 ms 14736 KB Output is correct
17 Runtime error 81 ms 26500 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -