oj.uz

Submission #565923

# Submission time Handle Problem Language Result Execution time Memory
565923 2022-05-21T14:31:13 Z groshi Easter Eggs (info1cup17_eastereggs) C++17
100 / 100
 24 ms 2148 KB 
#include<iostream>
#include<vector>
#include<utility>
#include "grader.h"
using namespace std;
struct wi{
    vector<int> Q;
    int odw=0;
    int dol=0;
}*w;
vector<int> lista;
/*bool query(vector<int> Q)
{
    cout<<"pytam sie\n";
    for(int i=0;i<Q.size();i++)
        cout<<Q[i]<<" ";
    int k;
    cin>>k;
    return k;
}*/
void dfs(int x,int ojc)
{
    lista.push_back(x);
    w[x].odw=1;
    for(int i=0;i<w[x].Q.size();i++)
    {
        int pom=w[x].Q[i];
        if(w[pom].odw==1)
            continue;
        dfs(pom,x);
    }
}
int findEgg(int n,vector<pair<int,int> > bridges)
{
    lista.clear();
    w=new wi[n+3];
    for(int i=0;i<bridges.size();i++)
    {
        int x=bridges[i].first;
        int y=bridges[i].second;
        w[x].Q.push_back(y);
        w[y].Q.push_back(x);
    }
    dfs(1,0);
    int pocz=0,kon=lista.size()-1,sre,ostd=lista.size()-1;
    while(pocz<kon)
    {
        sre=(pocz+kon)/2;
        vector<int> zapytaj;
        for(int i=0;i<=sre;i++)
            zapytaj.push_back(lista[i]);
        int k=query(zapytaj);
        if(k==1)
        {
            ostd=sre;
            kon=sre;
        }
        else pocz=sre+1;
    }
    return lista[ostd];
}

Compilation message

eastereggs.cpp: In function 'void dfs(int, int)':
eastereggs.cpp:25:18: 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<w[x].Q.size();i++)
      |                 ~^~~~~~~~~~~~~~
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(int i=0;i<bridges.size();i++)
      |                 ~^~~~~~~~~~~~~~~

Subtask #1
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Number of queries: 4
2 Correct 1 ms 208 KB Number of queries: 4
3 Correct 1 ms 208 KB Number of queries: 4
4 Correct 1 ms 208 KB Number of queries: 4

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 660 KB Number of queries: 8
2 Correct 12 ms 1224 KB Number of queries: 9
3 Correct 17 ms 1772 KB Number of queries: 9
4 Correct 16 ms 1920 KB Number of queries: 9

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1864 KB Number of queries: 9
2 Correct 15 ms 1984 KB Number of queries: 9
3 Correct 24 ms 1864 KB Number of queries: 9
4 Correct 19 ms 2148 KB Number of queries: 9