Submission #45554

#	Time	Username	Problem	Language	Result	Execution time	Memory
45554		aome	Easter Eggs (info1cup17_eastereggs)	C++17	100 / 100	21 ms	548 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"

using namespace std;

const int N = 555;

int T;
int arr[N];
vector<int> G[N];

void dfs(int u, int p) {
	arr[++T] = u;
	for (auto v : G[u]) {
		if (v == p) continue; dfs(v, u);
	}
}

int findEgg(int n, vector < pair <int, int> > bridges) {
	T = 0;
	for (int i = 1; i <= n; ++i) G[i].clear();
	for (int i = 0; i < (n - 1); ++i) {
		G[bridges[i].first].push_back(bridges[i].second);
		G[bridges[i].second].push_back(bridges[i].first);
	}
	dfs(1, 1);
	int l = 1, r = n;
	while (l < r) {
		int mid = (l + r) >> 1;
		vector<int> ask;
		for (int i = 1; i <= mid; ++i) ask.push_back(arr[i]);
		if (query(ask)) r = mid; else l = mid + 1;
	}
	return arr[l];
}

Compilation message (stderr)

eastereggs.cpp: In function 'void dfs(int, int)':
eastereggs.cpp:15:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if (v == p) continue; dfs(v, u);
   ^~
eastereggs.cpp:15:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   if (v == p) continue; dfs(v, u);
                         ^~~

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