Submission #1122228

#	Time	Username	Problem	Language	Result	Execution time	Memory
1122228		I_love_Banu	Easter Eggs (info1cup17_eastereggs)	C++14	0 / 100	283 ms	131072 KiB

eastereggs

#include"bits/stdc++.h"
#include"grader.h"
using namespace std;

using vi = vector<int>;

const int mxN = 513;

vi aj[mxN];
vi line;

void dfs(int u, int p = 0) {
    line.push_back(u);
    for (int v : aj[u]) {
        if (p ^ v) {
            dfs(v, u);
        }
    }
}

int findEgg (int N, vector < pair < int, int > > bridges)
{
    for (auto [u, v] : bridges) {
        aj[u].push_back(v);
        aj[v].push_back(u);
    }

    dfs(1);

    int l = 0, r = N - 1;
    while (l < r) {
        int mi = (l + r) / 2;
        vi qry;
        for (int i = 0; i <= mi; i ++) {
            qry.push_back(line[i]);
        }
        if (query(qry)) {
            r = mi;
        } else {
            l = mi + 1;
        }
    }

    return line[l];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:23:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   23 |     for (auto [u, v] : bridges) {
      |               ^

• Subtask 1: 0 / 40
• Subtask 2: 0 / 40
• Subtask 3: 0 / 20