Submission #145644

# Submission time Handle Problem Language Result Execution time Memory
145644 2019-08-20T15:49:34 Z karma Detecting Molecules (IOI16_molecules) C++11
Compilation error
0 ms 0 KB
#include<bits/stdc++.h>
#include "molecules.h"
#define ll   long long
#define mp   make_pair

using namespace std;

typedef pair<int, int> pii;

vector<int> find_subset(int l, int u, vector<int>& w)
{
    vector<int> ans;
    set<pii, greater<pii>> _Max, Max;
    set<pii> Min, _Min;
    int n; ll s = 0;
    pii top;
    n = w.size();
    for(int i = 0; i < n; ++i) {
       if(s + w[i] <= l) Min.insert(mp(w[i], i)), Max.insert(mp(w[i], i)), s += w[i];
       else _Max.insert(mp(w[i], i)), _Min.insert(mp(w[i], i));
    }
    while(s < l || s > u) {
        if(s < l) {
          top = *Min.begin();
          Min.erase(top), Max.erase(top);
          s -= top.first;
          _Max.insert(top), _Min.insert(top);
          top = *_Max.begin();
          s += top.first;
          _Min.erase(top), _Max.erase(top);
          Max.insert(top), Min.insert(top);
        } else {
          top = *Max.begin();
          s -= top.first;
          Min.erase(top), Max.erase(top);
          _Min.insert(top), _Max.insert(top);
          top = *_Min.begin();
          _Min.erase(top), _Max.erase(top);
          s += top.first;
          Max.insert(top), Min.insert(top);
        }
    }
    for(pii v: Max) ans.push_back(v.second + 1);
    return ans;
}

Compilation message

/tmp/ccBT0kUr.o: In function `main':
grader.cpp:(.text.startup+0x152): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status