Submission #435111

#TimeUsernameProblemLanguageResultExecution timeMemory
435111ApiramWerewolf (IOI18_werewolf)C++14
0 / 100
172 ms21500 KiB
#include<bits/stdc++.h>
//#include "werewolf.h"
using namespace std;
vector<vector<int>>adj(10000);
bool ok;
vector<bool>visited(10000,false);
void dfs (int s,int bot,int l,int r,int e,bool changed){
	if (ok)return;
	if (s==e){
		ok=true;
		return;
	}
	visited[s]=true;
	for (auto x:adj[s]){
		if (!visited[x]){
			if (bot==0&&x>=r){
				dfs(x,bot,l,r,e,changed);
			}
			else if (bot==1&&x<=l){
				dfs(x,bot,l,r,e,changed);
			}
			else if (x>l&&x<r){
				if (!changed)
				dfs(x,bot^1,l,r,e,true);
				dfs(x,bot,l,r,e,changed);
			}
		}
	}
}
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) {
  vector<int>A(E.size());
  for (int i  =0;i<N;++i){
  	adj[X[i]].push_back(Y[i]);
  	adj[Y[i]].push_back(X[i]);
  }
  //0 - human
  //1 - wolf
	for (int i  =0;i<E.size();++i){
  	ok=false;
  	for (int i =0;i<10000;++i)visited[i]=false;
  	dfs(s[i],0,L[i]-1,R[i],E[i],false);
  	A[i]|=ok;
	}
  return A;
}

Compilation message (stderr)

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:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  for (int i  =0;i<E.size();++i){
      |                 ~^~~~~~~~~
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