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답안 #169674

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
169674 2019-12-22T05:08:40 Z dennisstar 늑대인간 (IOI18_werewolf) C++11
100 / 100
 871 ms 94468 KB 
#include "werewolf.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define ryan bear
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
typedef vector<int> vim;

int N, M, Q; 
vim V[200010];

struct sler {
	int s, l, n, nd;
}sl[200010], er[200010];

struct tree {
	int tp, tp1;
	vim ch[400010];
	int s[400010], e[400010];
	void in(int a, int b) {
		ch[tp].push_back(a); ch[tp].push_back(b); tp++;
	}
	void dfs(int now) {
		s[now]=e[now]=tp1; tp1++;
		for (int i:ch[now]) {
			dfs(i);
			e[now]=max(e[now], e[i]);
		}
	}
}tr1, tr2;

struct Query {
	int x1, x2, y1, y2, n, ans;
}Qu[200010];

int par[200010], im[200010], dep[200010];

void Un1(int a, int b) {
	while (par[a]!=-1) a=par[a];
	while (par[b]!=-1) b=par[b];
	if (a==b) return ;
	if (dep[a]<dep[b]) swap(a, b);
	par[b]=a, dep[a]=max(dep[a], dep[b]+1);
	tr1.in(im[a], im[b]);
	im[a]=tr1.tp-1;
}

void f1() {
	tr1.tp=N, tr1.tp1=0;
	for (int i=0; i<N; i++) par[i]=-1, im[i]=i, dep[i]=0;
	for (int i=N-1, t=0; i>=0; i--) {
		for (int j:V[i]) {
			if (j>i) Un1(i, j);
		}
		for (; t<Q&&sl[t].l>=i; t++) {
			int l=sl[t].s; while(par[l]!=-1) l=par[l];
			sl[t].nd=im[l];
		}
	}
	tr1.dfs(tr1.tp-1);
}

void Un2(int a, int b) {
	while (par[a]!=-1) a=par[a];
	while (par[b]!=-1) b=par[b];
	if (a==b) return ;
	if (dep[a]<dep[b]) swap(a, b);
	par[b]=a, dep[a]=max(dep[a], dep[b]+1);
	tr2.in(im[a], im[b]);
	im[a]=tr2.tp-1;
}

void f2() {
	tr2.tp=N, tr2.tp1=0;
	for (int i=0; i<N; i++) par[i]=-1, im[i]=i, dep[i]=0;
	for (int i=0, t=0; i<N; i++) {
		for (int j:V[i]) {
			if (j<i) Un2(i, j);
		}
		for (; t<Q&&er[t].l<=i; t++) {
			int l=er[t].s; while(par[l]!=-1) l=par[l];
			er[t].nd=im[l];
		}
	}
	tr2.dfs(tr2.tp-1);
}

pii ar[200010];
int seg[(1<<20)];

vim check_validity(int N_, vim X, vim Y, vim S, vim E, vim L, vim R) {
	N=N_; M=X.size(); Q=S.size();
	for (int i=0; i<M; i++) {
		V[X[i]].push_back(Y[i]);
		V[Y[i]].push_back(X[i]);
	}
	for (int i=0; i<Q; i++) {
		sl[i]={S[i], L[i], i, 0};
		er[i]={E[i], R[i], i, 0};
	}

	sort(sl, sl+Q, [](sler a, sler b){return a.l>b.l;});
	sort(er, er+Q, [](sler a, sler b){return a.l<b.l;});
	f1(); f2();
	sort(sl, sl+Q, [](sler a, sler b){return a.n<b.n;});
	sort(er, er+Q, [](sler a, sler b){return a.n<b.n;});

	for (int i=0; i<N; i++) {
		ar[i]={tr1.s[i], tr2.s[i]};
		assert(tr1.s[i]==tr1.e[i]&&tr2.s[i]==tr2.e[i]);
	}
	sort(ar, ar+N);

	for (int i=0; i<Q; i++) {
		int nd1=sl[i].nd, nd2=er[i].nd;
		Qu[i]={tr1.s[nd1], tr1.e[nd1], tr2.s[nd2], tr2.e[nd2], i, 0};
	}
	sort(Qu, Qu+Q, [](Query a, Query b){return a.x2<b.x2;});

	int mx=0;
	for (int i=0, j=0; i<Q; i++) {
		for (; j<N && ar[j].fi<=Qu[i].x2; j++) for (int k=(1<<19)+ar[j].se; k; k/=2) seg[k]=max(seg[k], ar[j].fi);
		mx=0;
		for (int k=(1<<19)+Qu[i].y1, l=(1<<19)+Qu[i].y2; k<=l; k/=2, l/=2) {
			if (k%2) mx=max(mx, seg[k++]);
			if (l%2==0) mx=max(mx, seg[l--]);
		}
		if (mx>=Qu[i].x1) Qu[i].ans=1;
		else Qu[i].ans=0;
	}
	sort(Qu, Qu+Q, [](Query a, Query b){return a.n<b.n;});

	vim ans;
	for (int i=0; i<Q; i++) ans.push_back(Qu[i].ans);
	return ans;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23928 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 23 ms 23928 KB Output is correct
6 Correct 24 ms 23928 KB Output is correct
7 Correct 24 ms 23928 KB Output is correct
8 Correct 24 ms 23928 KB Output is correct
9 Correct 24 ms 23928 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23928 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 23 ms 23928 KB Output is correct
6 Correct 24 ms 23928 KB Output is correct
7 Correct 24 ms 23928 KB Output is correct
8 Correct 24 ms 23928 KB Output is correct
9 Correct 24 ms 23928 KB Output is correct
10 Correct 31 ms 24828 KB Output is correct
11 Correct 30 ms 24824 KB Output is correct
12 Correct 31 ms 24696 KB Output is correct
13 Correct 30 ms 24828 KB Output is correct
14 Correct 31 ms 24820 KB Output is correct
15 Correct 32 ms 24824 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 696 ms 77576 KB Output is correct
2 Correct 659 ms 88004 KB Output is correct
3 Correct 625 ms 86692 KB Output is correct
4 Correct 694 ms 86156 KB Output is correct
5 Correct 676 ms 86000 KB Output is correct
6 Correct 687 ms 86016 KB Output is correct
7 Correct 685 ms 86128 KB Output is correct
8 Correct 622 ms 88020 KB Output is correct
9 Correct 594 ms 86684 KB Output is correct
10 Correct 609 ms 86216 KB Output is correct
11 Correct 630 ms 86120 KB Output is correct
12 Correct 656 ms 86016 KB Output is correct
13 Correct 615 ms 87296 KB Output is correct
14 Correct 603 ms 87272 KB Output is correct
15 Correct 610 ms 87280 KB Output is correct
16 Correct 619 ms 87280 KB Output is correct
17 Correct 665 ms 85872 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23928 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 23 ms 23928 KB Output is correct
6 Correct 24 ms 23928 KB Output is correct
7 Correct 24 ms 23928 KB Output is correct
8 Correct 24 ms 23928 KB Output is correct
9 Correct 24 ms 23928 KB Output is correct
10 Correct 31 ms 24828 KB Output is correct
11 Correct 30 ms 24824 KB Output is correct
12 Correct 31 ms 24696 KB Output is correct
13 Correct 30 ms 24828 KB Output is correct
14 Correct 31 ms 24820 KB Output is correct
15 Correct 32 ms 24824 KB Output is correct
16 Correct 696 ms 77576 KB Output is correct
17 Correct 659 ms 88004 KB Output is correct
18 Correct 625 ms 86692 KB Output is correct
19 Correct 694 ms 86156 KB Output is correct
20 Correct 676 ms 86000 KB Output is correct
21 Correct 687 ms 86016 KB Output is correct
22 Correct 685 ms 86128 KB Output is correct
23 Correct 622 ms 88020 KB Output is correct
24 Correct 594 ms 86684 KB Output is correct
25 Correct 609 ms 86216 KB Output is correct
26 Correct 630 ms 86120 KB Output is correct
27 Correct 656 ms 86016 KB Output is correct
28 Correct 615 ms 87296 KB Output is correct
29 Correct 603 ms 87272 KB Output is correct
30 Correct 610 ms 87280 KB Output is correct
31 Correct 619 ms 87280 KB Output is correct
32 Correct 665 ms 85872 KB Output is correct
33 Correct 687 ms 86712 KB Output is correct
34 Correct 442 ms 66616 KB Output is correct
35 Correct 739 ms 88560 KB Output is correct
36 Correct 719 ms 86508 KB Output is correct
37 Correct 697 ms 87992 KB Output is correct
38 Correct 715 ms 86896 KB Output is correct
39 Correct 662 ms 90380 KB Output is correct
40 Correct 871 ms 93808 KB Output is correct
41 Correct 747 ms 87596 KB Output is correct
42 Correct 653 ms 86512 KB Output is correct
43 Correct 763 ms 91460 KB Output is correct
44 Correct 698 ms 88180 KB Output is correct
45 Correct 641 ms 90612 KB Output is correct
46 Correct 651 ms 90360 KB Output is correct
47 Correct 624 ms 87536 KB Output is correct
48 Correct 622 ms 87328 KB Output is correct
49 Correct 630 ms 87340 KB Output is correct
50 Correct 618 ms 87380 KB Output is correct
51 Correct 811 ms 94468 KB Output is correct
52 Correct 787 ms 94444 KB Output is correct