oj.uz

답안 #412774

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
412774 2021-05-27T13:30:02 Z aris12345678 Easter Eggs (info1cup17_eastereggs) C++14
0 / 100
 2 ms 456 KB 
#include <bits/stdc++.h>
#include "grader.h"
using namespace std;

const int mxN = 515;
vector<int> adj[mxN];
vector<int> euler;

void dfs(int u, int p) {
    euler.push_back(u);
    for(auto &v : adj[u]) {
        if(v == p) continue;
        dfs(v, u);
    }
}

int findEgg(int n, vector<pair<int, int> > bridges) {
    euler.clear();
    for(int i = 1; i <= n; i++)
        adj[i].clear();
    for(int i = 0; i < n-1; i++) {
        adj[bridges[i].first].push_back(bridges[i].second);
        adj[bridges[i].second].push_back(bridges[i].first);
    }
    dfs(1, 0);
    int st = 0, en = n-1, md, ans = -1;
    while(st <= en) {
        md = (st+en)/2;
        vector<int> check;
        for(int i = 0; i < md; i++)
            check.push_back(euler[i]);
        if(query(check)) {
            en = md-1;
            ans = md;
        } else {
            st = md+1;
        }
    }
    return euler[ans];
}

Subtask #1
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 456 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 1 ms 456 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 456 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -