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Submission #918049

# Submission time Handle Problem Language Result Execution time Memory
918049 2024-01-29T12:52:09 Z vjudge1 Easter Eggs (info1cup17_eastereggs) C++17
100 / 100
 15 ms 1520 KB 
#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
 
#define db long double
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pii>
#define vll vector<pll>
#define endl '\n'
#define all(x) x.begin(), x.end()
#define fastio\
    ios_base::sync_with_stdio(0);\
    cin.tie(0);\
    cout.tie(0)\
 
vi g[550], v;
int n;
 
void dfs(int node, int par){
    v.push_back(node);
    for(int i : g[node]){
        if(i == par)    continue;
        dfs(i, node);
    }
}
 
int findEgg(int N, vii bridges){
    n = N;
    for(int i = 1; i <= n; i++){
        g[i].clear();
    }
    for(pii i : bridges){
        g[i.first].push_back(i.second);
        g[i.second].push_back(i.first);
    }
    dfs(1, 1);
    int l = 0, r = n - 1, res = 0;
    while(l < r){
        int mid = (l + r) / 2;
        vi vv;
        for(int i = 0; i <= mid; i++)   vv.push_back(v[i]);
        if(query(vv)){
            res = mid;
            r = mid;
        }
        else{
            l = mid + 1;
        }
    }
    return v[l];
}

Compilation message

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:41:27: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   41 |     int l = 0, r = n - 1, res = 0;
      |                           ^~~

Subtask #1
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 444 KB Number of queries: 4
2 Correct 1 ms 444 KB Number of queries: 4
3 Correct 1 ms 448 KB Number of queries: 4
4 Correct 1 ms 600 KB Number of queries: 4

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 728 KB Number of queries: 8
2 Correct 8 ms 980 KB Number of queries: 9
3 Correct 13 ms 1348 KB Number of queries: 9
4 Correct 11 ms 1260 KB Number of queries: 9

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1356 KB Number of queries: 9
2 Correct 9 ms 1496 KB Number of queries: 9
3 Correct 11 ms 1240 KB Number of queries: 9
4 Correct 11 ms 1520 KB Number of queries: 9