oj.uz

답안 #851967

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
851967 2023-09-21T02:28:47 Z AtabayRajabli Easter Eggs (info1cup17_eastereggs) C++17
0 / 100
 2 ms 504 KB 
#include <bits/stdc++.h>
#include "grader.h"
using namespace std;

vector<vector<int>> g;
vector<int> order;

void dfs(int v, int prev, vector<int> &order, vector<vector<int>> &g)
{
    order.push_back(v);

    for(int i : g[v])
    {
        if(i == prev)continue;

        dfs(i, v, order, g);
    }
}

int query(vector < int > islands);

int findEgg(int n, vector<pair<int, int>> bridges)
{
    g.clear();
    order.clear();
    g.resize(n+1);

    for(auto &[u, v] : bridges)
    {
        g[u].push_back(v);
        g[v].push_back(u);
    }

    dfs(1, 0, order, g);

    int l = 0, r = n-1;
    while(l <= r)
    {
        int mid = (l + r) >> 1;

        if(query(vector<int> (order.begin(), order.begin() + mid)))
            r = mid;
        else
            l = mid + 1;
    }
    return order[l];
}

Subtask #1
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 440 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 468 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 504 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -