Submission #999157

#	Time	Username	Problem	Language	Result	Execution time	Memory
999157		Unforgettablepl	Werewolf (IOI18_werewolf)	C++17	15 / 100	4034 ms	31600 KiB

werewolf

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

#define all(x) x.begin(),x.end()


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) {
    int n = N;
    vector<vector<int>> adj(n);
    for(int i=0;i<X.size();i++){
        adj[X[i]].emplace_back(Y[i]);
        adj[Y[i]].emplace_back(X[i]);
    }
    vector<int> ans(S.size());
    for(int i=0;i<S.size();i++){
        priority_queue<pair<int,int>> q;
        vector<int> dists(n,-1);
        q.emplace(S[i],S[i]);
        vector<bool> visited(n);
        while(!q.empty()){
            auto [dist,idx]=q.top();q.pop();
            if(visited[idx])continue;
            visited[idx]=true;
            dists[idx] = dist;
            for(int&x:adj[idx])if(!visited[x])q.emplace(min(x,dist),x);
        }
        vector<int> diste(n,n);
        visited = vector<bool>(n);
        q.emplace(-E[i],E[i]);
        while(!q.empty()){
            auto [dist,idx]=q.top();q.pop();dist=-dist;
            if(visited[idx])continue;
            visited[idx]=true;
            diste[idx] = dist;
            for(int&x:adj[idx])if(!visited[x])q.emplace(-max(x,dist),x);
        }
        for(int x=0;x<n;x++)if(dists[x]>=L[i] and diste[x]<=R[i])ans[i]=1;
    }
    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:12:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(int i=0;i<X.size();i++){
      |                 ~^~~~~~~~~
werewolf.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i=0;i<S.size();i++){
      |                 ~^~~~~~~~~

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