Submission #882119

#	Time	Username	Problem	Language	Result	Execution time	Memory
882119		andro	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
#define int long long
//#include "molecules.h"
using namespace std;
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    multiset<pair<int,int>>ms;
    int n=w.size();
    for(int i=0;i<n;i++)ms.insert({w[i],i});
    vector<int>ans;
    while(l>0){
        auto lb=ms.lower_bound({l,-1e18});
        if(lb==ms.end()){
            lb--;
            if(lb==ms.begin())return {};
        }
        else {
            pair<int,int>B=*lb;
            ans.push_back(B.second);
            u-=B.first;
            if(u<0)return {};
            break;
        }
        pair<int,int>A=*lb;
        l-=A.first;
        u-=A.first;
        if(u<0)return {};
        //cout<<l<<" "<<u;
        //cout<<endl;
        ans.push_back(A.second);
        ms.erase(A);
    }
    return ans;
}/*
signed main(){
    for(auto it:find_subset(14, 15, {5, 5,
                             6}))cout<<it<<" ";
}*/

Compilation message (stderr)

/usr/bin/ld: /tmp/ccsK7aXZ.o: in function `main':
grader.cpp:(.text.startup+0x18d): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status