oj.uz

Submission #983647

# Submission time Handle Problem Language Result Execution time Memory
983647 2024-05-15T20:21:00 Z voidpoint11 Easter Eggs (info1cup17_eastereggs) C++14
100 / 100
 13 ms 1256 KB 
#include <bits/stdc++.h>
#include "grader.h"

using namespace std;

typedef long long ll;

vector<int> g[1010], ans;

void dfs(int u, int p) {
    ans.push_back(u);
    for (auto &v : g[u]) 
        if (v != p)
            dfs(v, u);
}

int findEgg (int n, vector<pair<int, int>> bridges) {
    for (int i = 1; i <= n; i++) 
        g[i].clear();
    for (auto &i : bridges)
        g[i.first].push_back(i.second), g[i.second].push_back(i.first);
    dfs(1, 0);
    int l = 0, r = n - 2;
    while (l <= r) {
        int m = (l + r) / 2;
        if (query(vector<int>(ans.begin(), ans.begin() + m + 1)))
            r = m - 1;
        else 
            l = m + 1;
    }
    return ans[l];
}

Subtask #1
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Number of queries: 4
2 Correct 1 ms 600 KB Number of queries: 4
3 Correct 1 ms 460 KB Number of queries: 4
4 Correct 1 ms 464 KB Number of queries: 4

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 760 KB Number of queries: 8
2 Correct 8 ms 1256 KB Number of queries: 9
3 Correct 13 ms 1044 KB Number of queries: 9
4 Correct 10 ms 908 KB Number of queries: 9

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 916 KB Number of queries: 9
2 Correct 9 ms 616 KB Number of queries: 9
3 Correct 10 ms 1204 KB Number of queries: 9
4 Correct 10 ms 856 KB Number of queries: 9