oj.uz

답안 #64771

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
64771 2018-08-05T15:10:19 Z TadijaSebez 열대 식물원 (Tropical Garden) (IOI11_garden) C++11
49 / 100
 143 ms 26488 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]>=0) 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]>=0) 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]>=0) 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]>=0) 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]>=0) 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]>=0) 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 7544 KB Output is correct
2 Correct 11 ms 7548 KB Output is correct
3 Correct 1 ms 7500 KB Output is correct
4 Correct 8 ms 7388 KB Output is correct
5 Correct 8 ms 7388 KB Output is correct
6 Correct 10 ms 7676 KB Output is correct
7 Correct 8 ms 7416 KB Output is correct
8 Correct 9 ms 7516 KB Output is correct
9 Correct 10 ms 7460 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7544 KB Output is correct
2 Correct 11 ms 7548 KB Output is correct
3 Correct 1 ms 7500 KB Output is correct
4 Correct 8 ms 7388 KB Output is correct
5 Correct 8 ms 7388 KB Output is correct
6 Correct 10 ms 7676 KB Output is correct
7 Correct 8 ms 7416 KB Output is correct
8 Correct 9 ms 7516 KB Output is correct
9 Correct 10 ms 7460 KB Output is correct
10 Correct 8 ms 7416 KB Output is correct
11 Correct 18 ms 9092 KB Output is correct
12 Correct 33 ms 10104 KB Output is correct
13 Correct 72 ms 24836 KB Output is correct
14 Correct 111 ms 16452 KB Output is correct
15 Correct 143 ms 17596 KB Output is correct
16 Correct 111 ms 14796 KB Output is correct
17 Runtime error 83 ms 26488 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 7544 KB Output is correct
2 Correct 11 ms 7548 KB Output is correct
3 Correct 1 ms 7500 KB Output is correct
4 Correct 8 ms 7388 KB Output is correct
5 Correct 8 ms 7388 KB Output is correct
6 Correct 10 ms 7676 KB Output is correct
7 Correct 8 ms 7416 KB Output is correct
8 Correct 9 ms 7516 KB Output is correct
9 Correct 10 ms 7460 KB Output is correct
10 Correct 8 ms 7416 KB Output is correct
11 Correct 18 ms 9092 KB Output is correct
12 Correct 33 ms 10104 KB Output is correct
13 Correct 72 ms 24836 KB Output is correct
14 Correct 111 ms 16452 KB Output is correct
15 Correct 143 ms 17596 KB Output is correct
16 Correct 111 ms 14796 KB Output is correct
17 Runtime error 83 ms 26488 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -