Submission #1198001

#	Time	Username	Problem	Language	Result	Execution time	Memory
1198001		njoop	Easter Eggs (info1cup17_eastereggs)	C++20	100 / 100	9 ms	516 KiB

eastereggs

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

using namespace std;

vector<int> order, g[1010];

void dfs(int no, int pa) {
    order.push_back(no);
    for(auto i: g[no]) {
        if(i == pa) continue;
        dfs(i, no);
    }
}

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

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