#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
typedef long long int lli;
typedef pair <lli,lli> ii;
typedef pair <ii,lli> iii;
typedef vector <lli> vi;
vi find_subset(lli l,lli r,vi arr1)
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
lli n=arr1.size(),l1=0,r1=0;
cin>>n>>l>>r;
vector<ii> arr(n);
for(lli i=0;i<n;++i)
{
arr[i].F=arr1[i];
arr[i].S=i;
}
sort(all(arr));
vector<ii> p(n+1);
p[0]=mp(0,0);
for(lli i=1;i<=n;++i)
{
p[i]=mp(p[i-1].F+arr[i-1].F,i);
}
for(lli i=0;i<n;++i)
{
auto it = lower_bound(all(p),mp(p[i].F+l,0*1LL));
if((*it).F-p[i].F>=l&&(*it).F-p[i].F<=r)
{
l1=p[i].S;
r1=(*it).S;
break;
}
}
vi v(r1-l1);
for(lli i=l1+1;i<=r1;++i)
v[i]=arr[i].S;
return(v);
}
Compilation message
/tmp/cciDv7mJ.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
