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답안 #123380

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
123380 2019-07-01T09:21:55 Z baluteshih 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
100 / 100
 224 ms 32532 KB 
#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],cir[300005],nG[300005],ans[2];
int to[300005],in[300005],bln[300005],pl[300005],preans[300005],cnt[300005],ANS[2005];

void dfs1(int u,int d)
{
	if(u&1^1) ++preans[d];
	for(int i:nG[u])
		dfs1(i,d+1);
}

void dfs2(int u,int d,int t)
{
	if(u&1^1) ans[t].pb(d);
	for(int i:nG[u])
		dfs2(i,d+1,t);
}

void doit(int x,int t)
{
	if(!bln[x])
		dfs1(x,0);
	else
	{
		for(int i=0;i<cir[bln[x]].size();++i)
			dfs2(cir[bln[x]][(pl[x]-i+cir[bln[x]].size())%cir[bln[x]].size()],i,t);
	}
}

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
	int tp=0;
	queue<int> q;
	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;
		++in[to[i<<1]],++in[to[i<<1|1]];
	}
	for(int i=0;i<2*N;++i)
		if(!in[i]) q.push(i);
	while(!q.empty())
	{
		int u=q.front();
		q.pop();
		if(--in[to[u]]==0) q.push(to[u]);
		nG[to[u]].pb(u);
	}
	for(int i=0;i<2*N;++i)
		if(in[i])
		{
			++tp;
			for(int j=i;in[j];j=to[j])
				in[j]=0,bln[j]=tp,pl[j]=cir[tp].size(),cir[tp].pb(j);
		}
	doit(P<<1,0),doit(P<<1|1,1);
	sort(ALL(ans[0])),sort(ALL(ans[1]));
	vector<pii> query;
	for(int i=0;i<Q;++i)
		query.pb(MP(G[i],i));
	sort(ALL(query));
	if(bln[P<<1])
		for(int i=0,j=0;i<Q;++i)
		{
			while(j<ans[0].size()&&ans[0][j]<=query[i].F)
				++cnt[ans[0][j]%cir[bln[P<<1]].size()],++j;
			ANS[query[i].S]+=cnt[query[i].F%cir[bln[P<<1]].size()];
		}
	MEM(cnt,0);
	if(bln[P<<1|1])
		for(int i=0,j=0;i<Q;++i)
		{
			while(j<ans[1].size()&&ans[1][j]<=query[i].F)
				++cnt[ans[1][j]%cir[bln[P<<1|1]].size()],++j;
			ANS[query[i].S]+=cnt[query[i].F%cir[bln[P<<1|1]].size()];
		}
	for(int i=0;i<Q;++i)
		if(G[i]<2*N) ANS[i]+=preans[G[i]];
	for(int i=0;i<Q;++i)
		answer(ANS[i]);
}

Compilation message

garden.cpp: In function 'void dfs1(int, int)':
garden.cpp:23:6: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  if(u&1^1) ++preans[d];
     ~^~
garden.cpp: In function 'void dfs2(int, int, int)':
garden.cpp:30:6: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  if(u&1^1) ans[t].pb(d);
     ~^~
garden.cpp: In function 'void doit(int, int)':
garden.cpp:41:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<cir[bln[x]].size();++i)
               ~^~~~~~~~~~~~~~~~~~~
garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:95:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(j<ans[0].size()&&ans[0][j]<=query[i].F)
          ~^~~~~~~~~~~~~~
garden.cpp:103:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(j<ans[1].size()&&ans[1][j]<=query[i].F)
          ~^~~~~~~~~~~~~~

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 19364 KB Output is correct
2 Correct 20 ms 19268 KB Output is correct
3 Correct 21 ms 19272 KB Output is correct
4 Correct 20 ms 19216 KB Output is correct
5 Correct 19 ms 19196 KB Output is correct
6 Correct 20 ms 19364 KB Output is correct
7 Correct 19 ms 19192 KB Output is correct
8 Correct 20 ms 19296 KB Output is correct
9 Correct 21 ms 19448 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 19364 KB Output is correct
2 Correct 20 ms 19268 KB Output is correct
3 Correct 21 ms 19272 KB Output is correct
4 Correct 20 ms 19216 KB Output is correct
5 Correct 19 ms 19196 KB Output is correct
6 Correct 20 ms 19364 KB Output is correct
7 Correct 19 ms 19192 KB Output is correct
8 Correct 20 ms 19296 KB Output is correct
9 Correct 21 ms 19448 KB Output is correct
10 Correct 19 ms 19164 KB Output is correct
11 Correct 32 ms 21020 KB Output is correct
12 Correct 46 ms 22708 KB Output is correct
13 Correct 65 ms 27076 KB Output is correct
14 Correct 180 ms 31568 KB Output is correct
15 Correct 224 ms 32204 KB Output is correct
16 Correct 174 ms 28708 KB Output is correct
17 Correct 133 ms 27624 KB Output is correct
18 Correct 57 ms 23168 KB Output is correct
19 Correct 185 ms 31620 KB Output is correct
20 Correct 219 ms 32184 KB Output is correct
21 Correct 171 ms 28984 KB Output is correct
22 Correct 148 ms 27748 KB Output is correct
23 Correct 184 ms 32436 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 19364 KB Output is correct
2 Correct 20 ms 19268 KB Output is correct
3 Correct 21 ms 19272 KB Output is correct
4 Correct 20 ms 19216 KB Output is correct
5 Correct 19 ms 19196 KB Output is correct
6 Correct 20 ms 19364 KB Output is correct
7 Correct 19 ms 19192 KB Output is correct
8 Correct 20 ms 19296 KB Output is correct
9 Correct 21 ms 19448 KB Output is correct
10 Correct 19 ms 19164 KB Output is correct
11 Correct 32 ms 21020 KB Output is correct
12 Correct 46 ms 22708 KB Output is correct
13 Correct 65 ms 27076 KB Output is correct
14 Correct 180 ms 31568 KB Output is correct
15 Correct 224 ms 32204 KB Output is correct
16 Correct 174 ms 28708 KB Output is correct
17 Correct 133 ms 27624 KB Output is correct
18 Correct 57 ms 23168 KB Output is correct
19 Correct 185 ms 31620 KB Output is correct
20 Correct 219 ms 32184 KB Output is correct
21 Correct 171 ms 28984 KB Output is correct
22 Correct 148 ms 27748 KB Output is correct
23 Correct 184 ms 32436 KB Output is correct
24 Correct 20 ms 19164 KB Output is correct
25 Correct 33 ms 21080 KB Output is correct
26 Correct 62 ms 22724 KB Output is correct
27 Correct 65 ms 27076 KB Output is correct
28 Correct 173 ms 31596 KB Output is correct
29 Correct 200 ms 32272 KB Output is correct
30 Correct 162 ms 28712 KB Output is correct
31 Correct 139 ms 27672 KB Output is correct
32 Correct 57 ms 22904 KB Output is correct
33 Correct 173 ms 31608 KB Output is correct
34 Correct 193 ms 32300 KB Output is correct
35 Correct 167 ms 28880 KB Output is correct
36 Correct 140 ms 27724 KB Output is correct
37 Correct 177 ms 32532 KB Output is correct
38 Correct 139 ms 31980 KB Output is correct