Submission #918580

#	Time	Username	Problem	Language	Result	Execution time	Memory
918580		HaciyevAlik	Easter Eggs (info1cup17_eastereggs)	C++14	87 / 100	13 ms	1248 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
const int mx=550;
vector<int> g[mx];
int a[mx],t;
void dfs(int u,int p) {
    a[++t]=u;
    for(int v:g[u]) {
        if(v!=p) dfs(v,u);
    }
}
int findEgg(int N,vector<pair<int,int>> bridges){
    t=0;
    for(int i=0;i<mx;++i) g[i].clear();
    for(int i=0;i<N-1;++i) {
        int u=bridges[i].first,v=bridges[i].second;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    dfs(1,0);
    int l=1,r=N;
    while(l<=r) {
        int mid=(l+r)/2;
        vector<int> temp;
        for(int i=1;i<=mid;++i) {
            temp.push_back(a[i]);
        }
        if(query(temp)) {
            r=mid-1;
        } else {
            l=mid+1;
        }
    }
    return a[l];
}

• Subtask 1: 32 / 40
• Subtask 2: 40 / 40
• Subtask 3: 15 / 20