Submission #1287521

#	Time	Username	Problem	Language	Result	Execution time	Memory
1287521		hnay1	Easter Eggs (info1cup17_eastereggs)	C++20	100 / 100	9 ms	516 KiB

eastereggs

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

using namespace std;

#define pb push_back
#define st first
#define nd second

using ll = long long;
using ld = long double;


const int MN = 1000;
vector <int> v[MN];
bool visited[MN];
vector <int> ord; 

void dfs(int x) {
    visited[x] = 1;
    ord.pb(x);
    for(int i : v[x]) {
        if(!visited[i]) {
            dfs(i);
        }
    } 
}

int findEgg(int N, vector < pair < int, int > > bridges) {
    for(int i = 0; i <= N; i++) {
        visited[i] = 0;
        v[i].clear();
    }
    ord.clear();
    for(auto i : bridges) {
        v[i.st].pb(i.nd);
        v[i.nd].pb(i.st);
    }
    dfs(1);
    int l = 1, r = N, s = 0;
    while(l < r) {
        s = (l + r) / 2;
        vector <int> ss = {};
        for(int i = 0; i < s; i++) {
            ss.pb(ord[i]);
        }
        if(query(ss) == 0) {
            l = s + 1;
        }
        else {
            r = s;
        }
    }
    return ord[l - 1];
}

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