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Submission #918354

# Submission time Handle Problem Language Result Execution time Memory
918354 2024-01-29T17:25:29 Z Ferid20072020 Easter Eggs (info1cup17_eastereggs) C++14
100 / 100
 28 ms 6188 KB 
#include <bits/stdc++.h>
#include "grader.h"

using namespace std;

const int up = 2e5 + 5;

vector<int> g[up];
vector<int> List;

void DFS(int node , int from){
    List.push_back(node);
    for(auto to : g[node]){
        if(to != from){
            DFS(to , node);
        }
    }
}

int findEgg (int N, vector < pair < int, int > > bridges)
{
    List.clear();
    int i;
    for(i=0 ; i<up ; i++){
        g[i].clear();
    }

    for(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 , 0);


    int l = 0 , r = N - 1 , mid;
    vector<int> c;
    while(l < r){
        mid = (l + r) / 2;
        for(i=0 ; i<=mid ; i++){
            c.push_back(List[i]);
        }
        if(query(c) == 1){
            r = mid;
        }
        else{
            l = mid + 1;
        }
        c.clear();
    }
    return List[l];
}

Compilation message

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:28:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(i=0 ; i<bridges.size() ; i++){
      |               ~^~~~~~~~~~~~~~~

Subtask #1
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4952 KB Number of queries: 4
2 Correct 8 ms 5108 KB Number of queries: 4
3 Correct 7 ms 4952 KB Number of queries: 4
4 Correct 6 ms 4952 KB Number of queries: 4

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 5412 KB Number of queries: 8
2 Correct 18 ms 5412 KB Number of queries: 9
3 Correct 24 ms 5412 KB Number of queries: 9
4 Correct 21 ms 5428 KB Number of queries: 9

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 5456 KB Number of queries: 9
2 Correct 20 ms 6188 KB Number of queries: 9
3 Correct 24 ms 5672 KB Number of queries: 9
4 Correct 22 ms 5436 KB Number of queries: 9