Submission #1038531

#	Time	Username	Problem	Language	Result	Execution time	Memory
1038531		vjudge1	Werewolf (IOI18_werewolf)	C++17	15 / 100	175 ms	32712 KiB

werewolf

#include "werewolf.h"
#include<bits/stdc++.h>
using namespace std;
vector<int>adj[100100];
bitset<100100> i_could1,i_could2;
int l,r;

void dfs_h(int n){
  if(n<l)return;
  if(i_could1[n])return;
  i_could1[n]=1;
  for(auto i:adj[n])
    dfs_h(i);
}
void dfs_w(int n){
  if(n>r)return;
  if(i_could2[n])return;
  i_could2[n]=1;
  for(auto i:adj[n])
    dfs_w(i);
}
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) {
  for(int i=0;i<X.size();i++)
    adj[X[i]].push_back(Y[i]),
    adj[Y[i]].push_back(X[i]);
  int Q = S.size();
  std::vector<int> A(Q);
  for (int i = 0; i < Q; ++i) {
    i_could1.reset();
    i_could2.reset();
    l=L[i],r=R[i];
    dfs_h(S[i]);
    dfs_w(E[i]);
    for(int j=l;j<=r;j++)
      A[i]|=i_could1[j]&i_could2[j];
  }
  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:25:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   for(int i=0;i<X.size();i++)
      |               ~^~~~~~~~~

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