Submission #419932

#	Time	Username	Problem	Language	Result	Execution time	Memory
419932		Antekb	Werewolf (IOI18_werewolf)	C++14	0 / 100	381 ms	46164 KiB

werewolf

#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]);
}
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";
	std::vector<int> A(q);
  	for (int i = 0; i < q; ++i){
  		//cout<<i<<" "<<S[i]<<" "<<T[i]<<"\n";
  		A[i]=(S[i]<=T[i]);
	}
	return A;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51