Submission #448382

#	Time	Username	Problem	Language	Result	Execution time	Memory
448382		tredsused70	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int find_subset(int l,int u,int mas_[],int n,int ans[])
{
    int used[100100]={0},m=0,pos;
    array<int,2> mas[100100];
    ll sum=0;
    for(int i=0;i<n;i++)
        mas[i]={mas_[i],i+1};
    sort(mas,mas+n);
    for(int i=0;i<n;i++)
    {
        sum+=mas[i][0];
        if(sum>u)
        {
            sum-=mas[i][0];
            break;
        }
        used[mas[i][1]]=1;
        ans[m]=mas[i][1];
        m++;
        if(sum>=l)
            return m;
    }
    for(int i=m-1;i>=0;i--)
    {
        if(used[mas[n-m+i][1]])
            continue;
        used[mas[i][1]]=0;
        used[mas[n-m+i][1]]=1;
        sum-=mas[i][0];
        sum+=mas[n-m+i][0];
        ans[i]=mas[n-m+i][1];
        if(sum>=l)
            return m;
    }
    return 0;
}

Compilation message (stderr)

molecules.cpp: In function 'int find_subset(int, int, int*, int, int*)':
molecules.cpp:9:30: warning: unused variable 'pos' [-Wunused-variable]
    9 |     int used[100100]={0},m=0,pos;
      |                              ^~~
/usr/bin/ld: /tmp/ccFTdoUx.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