oj.uz

답안 #84824

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
84824 2018-11-17T11:02:19 Z KLPP 늑대인간 (IOI18_werewolf) C++14
100 / 100
 1506 ms 504632 KB 
#include "werewolf.h"
#include<iostream>
#include<vector>
#include<algorithm>
#include<unordered_map>
#include<map>
using namespace std;
typedef long long int lld;
typedef pair<int,int> pii;
typedef std::unordered_map<lld,int>::const_iterator mit;
/*class DFT{
	std::unordered_map<lld,int> m;
	int N;
	public:
	void init(int n){
		N=n;
		//m.rehash(10000);
	}
	void sum(int a, int b, int x){
		lld pos=a*(N+1)+b;
		mit it =m.find(pos);
		if(it==m.end()){
			m[pos]=x;
			return;
		}
		m[pos]=it->second+x;
	}
	int get(int a, int b){lld pos=a*(N+1)+b;
		mit it =m.find(pos);
		if(it==m.end()){
			return 0;
		}
		return it->second;
	}
	void at(int x, int y, int up){
		for(int i=x;i<=N;i+=(i&(-i))){
			for(int j=y;j<=N;j+=(j&(-j))){
				sum(i,j,up);
			}
		}
	}
	int query(int x, int y){
		int ans=0;
		for(int i=x;i>0;i-=(i&(-i))){
			for(int j=y;j>0;j-=(j&(-j))){
				ans+=get(i,j);
			}
		}return ans;
	}
};*/
class FT{
	int arr[1000000];
	int N;
	public:
	void init(int n){
		N=n;
		//m.rehash(10000);
		for(int i=0;i<=n;i++)arr[i]=0;
	}
	void at(int x, int up){
		for(int i=x;i<=N;i+=(i&(-i))){
			arr[i]+=up;
		}
	}
	int query(int x){
		int ans=0;
		for(int i=x;i>0;i-=(i&(-i))){
			ans+=arr[i];
		}return ans;
	}
};

class DSU{
	int parent[1000000];
	int root[1000000];
	int ST[1000000][32];
	vector<int> child[1000000];
	int TOP;
	int MOD;
	int N;
	public:
	vector<int> Tour;
	int first[1000000];
	int last[1000000];
	void init(int n, int mod){
		N=n;
		for(int i=0;i<n;i++){
			parent[i]=i;
			root[i]=i;
			first[i]=-1;
			last[i]=-1;
		}
		MOD=mod;
	}
	int Root(int x){
		if(x==root[x])return x;
		root[x]=Root(root[x]);
		return root[x];
	}
	void merge(int a, int b){
		a=Root(a);
		b=Root(b);
		if(a==b)return;
		if(MOD){
			if(a<b){
				parent[a]=b;
				root[a]=b;
			}else{
				parent[b]=a;
				root[b]=a;
			}
			return;
		}
		if(a<b){
			parent[b]=a;
			root[b]=a;
		}else{
			parent[a]=b;
			root[a]=b;
		}
		return;
	}
	void arrange(){
		for(int i=0;i<N;i++){
			if(parent[i]!=i){
				child[parent[i]].push_back(i);
			}else TOP=i;
		}
		for(int i=0;i<N;i++){
			ST[i][0]=parent[i];
		}
		for(int j=1;j<32;j++){
			for(int i=0;i<N;i++){
				ST[i][j]=ST[ST[i][j-1]][j-1];
			}
		}
	}
	void DFS(int node){
		first[node]=Tour.size();
		Tour.push_back(node);
		for(int i=0;i<child[node].size();i++){
			DFS(child[node][i]);
			//Tour.push_back(node);
		}
		last[node]=Tour.size();
	}
	void START(){
		DFS(TOP);
	}
	int Query(int Start,int Top){
		if(MOD==0){
			int ans=Start;
			for(int i=31;i>-1;i--){
				if(ST[ans][i]>=Top)ans=ST[ans][i];
			}
			return ans;
		}
		int ans=Start;
		for(int i=31;i>-1;i--){
			if(ST[ans][i]<=Top)ans=ST[ans][i];
		}
		return ans;
	}
	void CMP(){
		for(int i=0;i<Tour.size();i++){
			if(first[Tour[i]]==-1)first[Tour[i]]=i;
			last[Tour[i]]=i;
		}
	}
	void print(){
		/*for(int i=0;i<N;i++){
			cout<<parent[i]<<" ";
		}cout<<endl;*/
		for(int i=0;i<Tour.size();i++){
			cout<<Tour[i]<<" ";
		}cout<<endl;
	}

};
DSU *D1;
DSU *D2;
FT *F;
std::vector<int> check_validity(int N, std::vector<int> X, std::vector<int> Y,
                                std::vector<int> S, std::vector<int> E,
                                std::vector<int> L, std::vector<int> R) {
	int Q = S.size();
	std::vector<int> A(Q);
	D1=new DSU();D2=new DSU();
	D1->init(N,0);
	D2->init(N,1);
	vector<pair<int,int> > order1;
	vector<pair<int,int> > order2;
	for(int i=0;i<X.size();i++){
		if(X[i]<Y[i]){
			order1.push_back(pii(X[i],Y[i]));
			order2.push_back(pii(Y[i],X[i]));
		}
		else{
			order1.push_back(pii(Y[i],X[i]));
			order2.push_back(pii(X[i],Y[i]));
		}
	}
	sort(order1.begin(),order1.end());
	sort(order2.begin(),order2.end());
	for(int i=order1.size()-1;i>-1;i--){
		//cout<<order1[i].first<<" "<<order1[i].second<<endl;
		D1->merge(order1[i].first,order1[i].second);
	}D1->arrange();
	D1->START();
	//D1->CMP();
	//D1->print();
	for(int i=0;i<order2.size();i++){
		D2->merge(order2[i].first,order2[i].second);
	}
	D2->arrange();
	D2->START();
	//D2->CMP();
	//D2->print();
	int Query[Q][4];
	F=new FT();
	F->init(N);
	int per[N];
	for(int i=0;i<N;i++){
		per[D1->first[i]]=D2->first[i]+1;
	}
	/*for(int i=0;i<N;i++){
		cout<<per[i]<<endl;
	}*/
	vector<pair<pii,int> >V;
	for(int i=0;i<Q;i++){A[i]=0;
		Query[i][0]=D1->first[D1->Query(S[i],L[i])];
		Query[i][1]=D1->last[D1->Query(S[i],L[i])];
		Query[i][2]=D2->first[D2->Query(E[i],R[i])];
		Query[i][3]=D2->last[D2->Query(E[i],R[i])];
		V.push_back(pair<pii,int>(pii(Query[i][0],Query[i][2]),4*i));
		V.push_back(pair<pii,int>(pii(Query[i][1],Query[i][3]),4*i+1));
		V.push_back(pair<pii,int>(pii(Query[i][0],Query[i][3]),4*i+2));
		V.push_back(pair<pii,int>(pii(Query[i][1],Query[i][2]),4*i+3));
	}
	sort(V.begin(),V.end());
	int pnt=0;
	for(int i=0;i<V.size();i++){
		//cout<<V[i].first.first<<" "<<V[i].first.second<<" "<<V[i].second<<endl;
		while(pnt<V[i].first.first){
			pnt++;
			F->at(per[pnt-1],1);
		}
		if((V[i].second%4)<2){
			A[V[i].second/4]+=F->query(V[i].first.second);
		}else{
			A[V[i].second/4]-=F->query(V[i].first.second);
		}
	}
	
	
	
	for (int i = 0; i < Q; ++i) {//cout<<i<<endl;
		if(A[i]>0)A[i]=1;
	}
	
	return A;
}

Compilation message

werewolf.cpp: In member function 'void DSU::DFS(int)':
werewolf.cpp:141:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<child[node].size();i++){
               ~^~~~~~~~~~~~~~~~~~~
werewolf.cpp: In member function 'void DSU::CMP()':
werewolf.cpp:165:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<Tour.size();i++){
               ~^~~~~~~~~~~~
werewolf.cpp: In member function 'void DSU::print()':
werewolf.cpp:174:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<Tour.size();i++){
               ~^~~~~~~~~~~~
werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:193:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<X.size();i++){
              ~^~~~~~~~~
werewolf.cpp:212:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<order2.size();i++){
              ~^~~~~~~~~~~~~~
werewolf.cpp:242:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<V.size();i++){
              ~^~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 285 ms 333048 KB Output is correct
2 Correct 267 ms 333060 KB Output is correct
3 Correct 271 ms 333228 KB Output is correct
4 Correct 277 ms 333228 KB Output is correct
5 Correct 288 ms 333228 KB Output is correct
6 Correct 277 ms 333328 KB Output is correct
7 Correct 274 ms 333328 KB Output is correct
8 Correct 273 ms 333500 KB Output is correct
9 Correct 257 ms 333500 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 285 ms 333048 KB Output is correct
2 Correct 267 ms 333060 KB Output is correct
3 Correct 271 ms 333228 KB Output is correct
4 Correct 277 ms 333228 KB Output is correct
5 Correct 288 ms 333228 KB Output is correct
6 Correct 277 ms 333328 KB Output is correct
7 Correct 274 ms 333328 KB Output is correct
8 Correct 273 ms 333500 KB Output is correct
9 Correct 257 ms 333500 KB Output is correct
10 Correct 283 ms 334164 KB Output is correct
11 Correct 287 ms 334264 KB Output is correct
12 Correct 285 ms 334312 KB Output is correct
13 Correct 280 ms 334464 KB Output is correct
14 Correct 284 ms 334556 KB Output is correct
15 Correct 283 ms 334848 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1228 ms 375040 KB Output is correct
2 Correct 1301 ms 377672 KB Output is correct
3 Correct 1203 ms 377672 KB Output is correct
4 Correct 1164 ms 377672 KB Output is correct
5 Correct 1325 ms 377672 KB Output is correct
6 Correct 1137 ms 377672 KB Output is correct
7 Correct 1198 ms 377672 KB Output is correct
8 Correct 1210 ms 377672 KB Output is correct
9 Correct 1043 ms 377672 KB Output is correct
10 Correct 1000 ms 377672 KB Output is correct
11 Correct 1004 ms 377672 KB Output is correct
12 Correct 1016 ms 377672 KB Output is correct
13 Correct 1424 ms 381660 KB Output is correct
14 Correct 1448 ms 381764 KB Output is correct
15 Correct 1394 ms 381764 KB Output is correct
16 Correct 1474 ms 381764 KB Output is correct
17 Correct 1213 ms 381764 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 285 ms 333048 KB Output is correct
2 Correct 267 ms 333060 KB Output is correct
3 Correct 271 ms 333228 KB Output is correct
4 Correct 277 ms 333228 KB Output is correct
5 Correct 288 ms 333228 KB Output is correct
6 Correct 277 ms 333328 KB Output is correct
7 Correct 274 ms 333328 KB Output is correct
8 Correct 273 ms 333500 KB Output is correct
9 Correct 257 ms 333500 KB Output is correct
10 Correct 283 ms 334164 KB Output is correct
11 Correct 287 ms 334264 KB Output is correct
12 Correct 285 ms 334312 KB Output is correct
13 Correct 280 ms 334464 KB Output is correct
14 Correct 284 ms 334556 KB Output is correct
15 Correct 283 ms 334848 KB Output is correct
16 Correct 1228 ms 375040 KB Output is correct
17 Correct 1301 ms 377672 KB Output is correct
18 Correct 1203 ms 377672 KB Output is correct
19 Correct 1164 ms 377672 KB Output is correct
20 Correct 1325 ms 377672 KB Output is correct
21 Correct 1137 ms 377672 KB Output is correct
22 Correct 1198 ms 377672 KB Output is correct
23 Correct 1210 ms 377672 KB Output is correct
24 Correct 1043 ms 377672 KB Output is correct
25 Correct 1000 ms 377672 KB Output is correct
26 Correct 1004 ms 377672 KB Output is correct
27 Correct 1016 ms 377672 KB Output is correct
28 Correct 1424 ms 381660 KB Output is correct
29 Correct 1448 ms 381764 KB Output is correct
30 Correct 1394 ms 381764 KB Output is correct
31 Correct 1474 ms 381764 KB Output is correct
32 Correct 1213 ms 381764 KB Output is correct
33 Correct 1245 ms 381764 KB Output is correct
34 Correct 933 ms 381764 KB Output is correct
35 Correct 1444 ms 381764 KB Output is correct
36 Correct 1259 ms 381764 KB Output is correct
37 Correct 1369 ms 385776 KB Output is correct
38 Correct 1274 ms 394472 KB Output is correct
39 Correct 1322 ms 404192 KB Output is correct
40 Correct 1483 ms 423468 KB Output is correct
41 Correct 1129 ms 423468 KB Output is correct
42 Correct 1087 ms 430960 KB Output is correct
43 Correct 1351 ms 446432 KB Output is correct
44 Correct 1192 ms 449032 KB Output is correct
45 Correct 1100 ms 459780 KB Output is correct
46 Correct 1148 ms 461560 KB Output is correct
47 Correct 1443 ms 470696 KB Output is correct
48 Correct 1506 ms 478768 KB Output is correct
49 Correct 1321 ms 487352 KB Output is correct
50 Correct 1391 ms 495120 KB Output is correct
51 Correct 1361 ms 502332 KB Output is correct
52 Correct 1392 ms 504632 KB Output is correct