Submission #516665

#	Time	Username	Problem	Language	Result	Execution time	Memory
516665		lucri	Easter Eggs (info1cup17_eastereggs)	C++17	Compilation error	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
//#include "grader.h"
using namespace std;
vector<int>v;
vector<pair<int,int>>l;
bool ok[520];
void constructie(int poz,int n)
{
    int nr=0;
    while(++nr<=n)
    {
        ok[poz]=true;
        v.push_back(poz);
        if(ok[l[poz].first]==true)
            poz=l[poz].second;
        else
            poz=l[poz].first;
    }
    return;
}
//int query(vector < int > islands);
int findEgg(int N, vector < pair < int, int > > bridges)
{
    v.clear();
    l.clear();
    int nra[520]={0};
    l.resize(N+5);
    v.resize(N+5);
    for(int i=1;i<=N;++i)
        ok[i]=false;
    for(auto x:bridges)
    {
        ++nra[x.first];
        ++nra[x.second];
        if(nra[x].first==1)
            l[x.first].first=x.second;
        else
            l[x.first].second=x.second;
        if(nra[x].second==1)
            l[x.second].first=x.first;
        else
            l[x.second].second=x.first;
    }
    for(int i=1;i<=N;++i)
    {
        if(nra[i]==0)
            constructie(i,N);
        break;
    }
    int b=0,e=N-1;
    while(b<=e)
    {
        int m=(b+e)/2;
        vector<int>q;
        for(int x=b;x<=e;++x)
            q.push_back(v[x]);
        if(query(q))
            e=m-1;
        else
            b=m+1;
        q.clear();
    }
    return v[b];
}

Compilation message (stderr)

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:35:15: error: no match for 'operator[]' (operand types are 'int [520]' and 'std::pair<int, int>')
   35 |         if(nra[x].first==1)
      |               ^
eastereggs.cpp:39:15: error: no match for 'operator[]' (operand types are 'int [520]' and 'std::pair<int, int>')
   39 |         if(nra[x].second==1)
      |               ^
eastereggs.cpp:57:12: error: 'query' was not declared in this scope
   57 |         if(query(q))
      |            ^~~~~