제출 #864279

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
864279		gutzzy	Easter Eggs (info1cup17_eastereggs)	C++14	컴파일 에러	0 ms	0 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;

int fingEgg(int n, vector<pair<int, int>>bridges){
    // vector 1D de todas las islas
    vector<vector<int>> lst(n,vector<int>());
    
    for(auto b:bridges){
        lst[b.first-1].push_back(b.second-1);
        lst[b.second-1].push_back(b.first-1);
    }
    
    vector<int> islands;
    
    int isl=0;
    while((int) lst[isl].size()!=1) isl++;          // busco un extremo
    
    
    islands.push_back(isl);
    int l_isl = isl;
    isl = lst[l_isl][0];
    islands.push_back(isl);
    
    while((int) islands.size() != n){
        int t = isl;
        if(lst[isl][0]==l_isl) isl = lst[isl][1];
        else isl = lst[isl][1];
        l_isl = t;
        islands.push_back(isl);
    }
    
    // binary search
    
    int l = 0;
    int r = n-1;
    while(l<=r){
        int m = (l+r)/2;
        bool egg = query({islands.begin(),islands.begin()+m});
        if(egg) r = m-1;
        else l = m+1;
    }
    return l;
}

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cchoRYZw.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