Submission #1122195

#	Time	Username	Problem	Language	Result	Execution time	Memory
1122195		Luvidi	Werewolf (IOI18_werewolf)	C++17	15 / 100	4057 ms	33524 KiB

werewolf

#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;

const int maxn=2e5;
vector<int> adj[maxn];
bool v1[maxn],v2[maxn];

void dfs1(int v,int l){
    v1[v]=1;
    for(int u:adj[v])if(u>=l&&!v1[u])dfs1(u,l);
}

void dfs2(int v,int r){
    v2[v]=1;
    for(int u:adj[v])if(u<=r&&!v2[u])dfs2(u,r);
}

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]);
    }
    vector<int> ans;
    for(int i=0;i<S.size();i++){
        int s=S[i],e=E[i],l=L[i],r=R[i];
        for(int j=0;j<n;j++)v1[j]=v2[j]=0;
        dfs1(s,l);
        dfs2(e,r);
        bool b=0;
        for(int j=0;j<n;j++)b|=v1[j]&&v2[j];
        ans.push_back(b);
    }
    return ans;
}

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:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i=0;i<x.size();i++){
      |                 ~^~~~~~~~~
werewolf.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i=0;i<S.size();i++){
      |                 ~^~~~~~~~~

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