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Submission #918684

# Submission time Handle Problem Language Result Execution time Memory
918684 2024-01-30T08:48:25 Z vjudge1 Easter Eggs (info1cup17_eastereggs) C++17
100 / 100
 11 ms 1248 KB 
#include<bits/stdc++.h>
#include "grader.h"
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define all(v) v.begin(), v.end()
#define pb push_back
#define f first
#define s second
using namespace std;
using namespace __gnu_pbds;
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const ll sz = 550;
vi g[sz];
vi order;
int vis[sz];
void dfs(int node)
{
    vis[node] = 1;
    order.pb(node);
    for(auto u : g[node])
    {
        if(!vis[u])
            dfs(u);
    }
}
int findEgg(int N, vector<pair<int, int>> bridges)
{
    for(int i = 1; i <= N; i++)
        g[i].clear();
    order.clear();
    for(auto x : bridges){
        g[x.f].pb(x.s);
        g[x.s].pb(x.f);
    }
    dfs(1);
    int l = 0, r = N - 1;
    while(l != r)
    {
        int mid = (l + r + 1) / 2;
        if(query(vi(order.begin(), order.begin() + mid)))    r = mid - 1;
        else    l = mid;
    }
    return order[l];
}

Subtask #1
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Number of queries: 4
2 Correct 1 ms 344 KB Number of queries: 4
3 Correct 1 ms 344 KB Number of queries: 4
4 Correct 1 ms 344 KB Number of queries: 4

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 724 KB Number of queries: 8
2 Correct 7 ms 984 KB Number of queries: 9
3 Correct 10 ms 992 KB Number of queries: 9
4 Correct 9 ms 752 KB Number of queries: 9

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 1016 KB Number of queries: 9
2 Correct 8 ms 744 KB Number of queries: 9
3 Correct 10 ms 1248 KB Number of queries: 9
4 Correct 10 ms 484 KB Number of queries: 9