Submission #875786

#	Time	Username	Problem	Language	Result	Execution time	Memory
875786		Aiperiii	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	11 ms	1240 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
vector <int> g[513];
vector <int> tin;
void dfs(int v,int p){
    tin.push_back(v);
    for(auto to : g[v]){
        if(to!=p)dfs(to,v);
    }
}
int findEgg (int N, vector < pair < int, int > > bridges)
{
    for(int i=1;i<=N;i++)g[i].clear();
    tin.clear();
    for(int i=0;i<bridges.size();i++){
        g[bridges[i].first].push_back(bridges[i].second);
        g[bridges[i].second].push_back(bridges[i].first);
    }
    dfs(1,-1);
    int l=0,r=N-1;
    while(l<r){
        int md=(l+r)/2;
        vector <int> check;
        for(int i=0;i<=md;i++)check.push_back(tin[i]);
        if(query(check))r=md;
        else l=md+1;
    }
    return tin[l];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=0;i<bridges.size();i++){
      |                 ~^~~~~~~~~~~~~~~

• Subtask 1: 40 / 40
• Subtask 2: 40 / 40
• Subtask 3: 20 / 20