oj.uz

Submission #384470

# Submission time Handle Problem Language Result Execution time Memory
384470 2021-04-01T17:42:30 Z ak2006 Easter Eggs (info1cup17_eastereggs) C++14
0 / 100
 2 ms 640 KB 
#include <bits/stdc++.h>
#include "grader.h"
#define pb push_back
using vi = vector<int>;
using vvi = vector<vi>;
vvi adj(513);
vi a;
void dfs(int i,int p)
{
    a.pb(i);
    for (int c:adj[i]){
        if (c == p)continue;
        dfs(c,i);
    }
}
int findEgg(int n,vector<pair<int,int>>b)
{
    for (int i = 0;i<=512;i++)adj[i].clear();
    a.clear();
    for (int i = 0;i<n - 1;i++)adj[b[i].first].pb(b[i].second);
    dfs(1,1);
    int l = 0,r = n - 1,ans = 0;
    while (l < r){
        int mid = (l + r + 1)/2;
        if (query(vector<int>(a.begin(),a.begin() + mid))){
            r = mid - 1;
        }
        else l = mid;
    }
    return a[l];
}

Compilation message

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:22:25: warning: unused variable 'ans' [-Wunused-variable]
   22 |     int l = 0,r = n - 1,ans = 0;
      |                         ^~~

Subtask #1
0 / 40.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 640 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 492 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 492 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -