oj.uz

답안 #419953

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
419953 2021-06-07T19:30:06 Z Antekb 늑대인간 (IOI18_werewolf) C++14
100 / 100
 650 ms 79100 KB 
#include "werewolf.h"
#include<bits/stdc++.h>
#define st first
#define nd second
#define pb(x) push_back(x)
#define mp(x, y) make_pair(x, y)
using namespace std;
typedef vector<int> vi;
const int N=(1<<18);
int r[N];
vector<int> edg[N];
vector<int> E[N], E2[N];
int find(int v){
	if(r[v]==v)return v;
	return r[v]=find(r[v]);
}
int wsk2=0;
int pre[N], post[N];
void dfs(int v){
	pre[v]=wsk2++;
	for(int u:E[v]){
		dfs(u);
	}
	post[v]=wsk2;
}
int tab[N+N];
void add(int i){
	for(i+=N; i>0; i>>=1){
		tab[i]++;
	}
}
int sum(int l, int r){
	int ans=0;
	for(l+=N, r+=N; l<r; l>>=1, r>>=1){
		if(l&1)ans+=tab[l++];
		if(r&1)ans+=tab[--r];
	}
	return ans;
}
vector<int> A;
vector<pair<int, int> > quer[N];
void dfs2(int v){
	for(auto i:quer[v]){
		A[i.nd]=-sum(pre[i.st], post[i.st]);
	}
	add(pre[v]);
	for(int u:E2[v])dfs2(u);
	for(auto i:quer[v]){
		A[i.nd]+=sum(pre[i.st], post[i.st]);
	}
}
std::vector<int> check_validity(int n, vi X, vi Y,
                                vi S, vi T,
                                vi L, vi R) {
    iota(r, r+N, 0);
    int m=X.size(), q = S.size();
	for(int i=0; i<m; i++){
		edg[X[i]].pb(Y[i]);
		edg[Y[i]].pb(X[i]);
	}
	vector<pair<int, int> > Q;
	for(int i=0; i<q; i++){
		Q.push_back({R[i], i});
	}
	sort(Q.begin(), Q.end());
	int wsk=0;
	for(int i=0; i<n; i++){
		for(int j:edg[i]){
			if(j<i){
				int v=find(j);
				if(i!=v){
					r[v]=i;
					E[i].push_back(v);
				}
			}
		}
		while(wsk<q && Q[wsk].st==i){
			//cout<<i<<" "<<T[Q[wsk].nd]<<" "<<find(T[Q[wsk].nd])<<"\n";
			T[Q[wsk].nd]=find(T[Q[wsk].nd]);
			wsk++;
		}
	}
	//cout<<wsk<<"\n";
	iota(r, r+N, 0);
	wsk=0;
	Q.clear();
	for(int i=0; i<q; i++){
		Q.push_back({L[i], i});
	}
	sort(Q.begin(), Q.end());
	reverse(Q.begin(), Q.end());
	for(int i=n-1; i>=0; i--){
		for(int j:edg[i]){
			if(j>i){
				int v=find(j);
				if(i!=v){
					r[v]=i;
					E2[i].push_back(v);
				}
			}
		}
		while(wsk<q && Q[wsk].st==i){
			S[Q[wsk].nd]=find(S[Q[wsk].nd]);
			wsk++;
		}
	}
	//cout<<wsk<<"a\n";
	A.resize(q);
  	dfs(n-1);
  	for(int i=0; i<q; i++){
  		quer[S[i]].push_back({T[i], i});
  	}
  	dfs2(0);
  	for(int i=0; i<q; i++)A[i]=!!A[i];
	return A;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 26012 KB Output is correct
2 Correct 15 ms 25908 KB Output is correct
3 Correct 17 ms 26060 KB Output is correct
4 Correct 17 ms 25932 KB Output is correct
5 Correct 15 ms 25952 KB Output is correct
6 Correct 15 ms 25932 KB Output is correct
7 Correct 14 ms 26020 KB Output is correct
8 Correct 15 ms 25956 KB Output is correct
9 Correct 15 ms 25916 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 26012 KB Output is correct
2 Correct 15 ms 25908 KB Output is correct
3 Correct 17 ms 26060 KB Output is correct
4 Correct 17 ms 25932 KB Output is correct
5 Correct 15 ms 25952 KB Output is correct
6 Correct 15 ms 25932 KB Output is correct
7 Correct 14 ms 26020 KB Output is correct
8 Correct 15 ms 25956 KB Output is correct
9 Correct 15 ms 25916 KB Output is correct
10 Correct 20 ms 26604 KB Output is correct
11 Correct 20 ms 26608 KB Output is correct
12 Correct 19 ms 26620 KB Output is correct
13 Correct 21 ms 26728 KB Output is correct
14 Correct 20 ms 26604 KB Output is correct
15 Correct 21 ms 26700 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 530 ms 59820 KB Output is correct
2 Correct 500 ms 69020 KB Output is correct
3 Correct 506 ms 67748 KB Output is correct
4 Correct 507 ms 67052 KB Output is correct
5 Correct 487 ms 67252 KB Output is correct
6 Correct 526 ms 67856 KB Output is correct
7 Correct 535 ms 67244 KB Output is correct
8 Correct 545 ms 68980 KB Output is correct
9 Correct 459 ms 67504 KB Output is correct
10 Correct 446 ms 66772 KB Output is correct
11 Correct 459 ms 66808 KB Output is correct
12 Correct 505 ms 66716 KB Output is correct
13 Correct 541 ms 78552 KB Output is correct
14 Correct 620 ms 78624 KB Output is correct
15 Correct 538 ms 78772 KB Output is correct
16 Correct 568 ms 78656 KB Output is correct
17 Correct 506 ms 67368 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 26012 KB Output is correct
2 Correct 15 ms 25908 KB Output is correct
3 Correct 17 ms 26060 KB Output is correct
4 Correct 17 ms 25932 KB Output is correct
5 Correct 15 ms 25952 KB Output is correct
6 Correct 15 ms 25932 KB Output is correct
7 Correct 14 ms 26020 KB Output is correct
8 Correct 15 ms 25956 KB Output is correct
9 Correct 15 ms 25916 KB Output is correct
10 Correct 20 ms 26604 KB Output is correct
11 Correct 20 ms 26608 KB Output is correct
12 Correct 19 ms 26620 KB Output is correct
13 Correct 21 ms 26728 KB Output is correct
14 Correct 20 ms 26604 KB Output is correct
15 Correct 21 ms 26700 KB Output is correct
16 Correct 530 ms 59820 KB Output is correct
17 Correct 500 ms 69020 KB Output is correct
18 Correct 506 ms 67748 KB Output is correct
19 Correct 507 ms 67052 KB Output is correct
20 Correct 487 ms 67252 KB Output is correct
21 Correct 526 ms 67856 KB Output is correct
22 Correct 535 ms 67244 KB Output is correct
23 Correct 545 ms 68980 KB Output is correct
24 Correct 459 ms 67504 KB Output is correct
25 Correct 446 ms 66772 KB Output is correct
26 Correct 459 ms 66808 KB Output is correct
27 Correct 505 ms 66716 KB Output is correct
28 Correct 541 ms 78552 KB Output is correct
29 Correct 620 ms 78624 KB Output is correct
30 Correct 538 ms 78772 KB Output is correct
31 Correct 568 ms 78656 KB Output is correct
32 Correct 506 ms 67368 KB Output is correct
33 Correct 565 ms 68828 KB Output is correct
34 Correct 365 ms 61556 KB Output is correct
35 Correct 580 ms 72460 KB Output is correct
36 Correct 542 ms 69120 KB Output is correct
37 Correct 597 ms 71384 KB Output is correct
38 Correct 584 ms 69868 KB Output is correct
39 Correct 535 ms 74896 KB Output is correct
40 Correct 640 ms 79100 KB Output is correct
41 Correct 558 ms 69572 KB Output is correct
42 Correct 467 ms 67772 KB Output is correct
43 Correct 650 ms 77740 KB Output is correct
44 Correct 532 ms 70648 KB Output is correct
45 Correct 508 ms 74164 KB Output is correct
46 Correct 518 ms 73652 KB Output is correct
47 Correct 519 ms 78772 KB Output is correct
48 Correct 501 ms 78552 KB Output is correct
49 Correct 506 ms 78804 KB Output is correct
50 Correct 524 ms 78636 KB Output is correct
51 Correct 591 ms 78216 KB Output is correct
52 Correct 607 ms 78276 KB Output is correct