Submission #918069

#	Time	Username	Problem	Language	Result	Execution time	Memory
918069		Elvin_Fritl	Easter Eggs (info1cup17_eastereggs)	C++17	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
 
const int N=2e3+5, mod=1e9+7;

int n;

#include "grader.h"

vector<int> d , g[N];

void dfs(int s,int p) {
    d.push_back(s);
    for(auto i: g[s]) {
        if(i == p) {
            continue;
        }
        dfs(i,s);
    }
}

int findEgg(int M , vector<pair<int , int>> &a) {
    n = M;
    for(int i=0;i<a.size();i++) {
        g[a[i].first].push_back(a[i].second);
        g[a[i].second].push_back(a[i].first);
    }
    dfs(1 , 1);
    int l = 1 , r = n , best = -1;
    while(l <= r) {
        int mid = (l + r)>>1;
        vector<int> q;
        for(int i=0;i<mid;i++) {
            q.push_back(d[i]);
        }
        if(query(q) == 1) {
            r = mid - 1;
            best = mid;
        }
        else {
            l = mid + 1;
        }
    }
    return best;
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >&)':
eastereggs.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i=0;i<a.size();i++) {
      |                 ~^~~~~~~~~
/usr/bin/ld: /tmp/ccsSGVgA.o: in function `main':
grader.cpp:(.text.startup+0x1e6): undefined reference to `findEgg(int, std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >)'
collect2: error: ld returned 1 exit status