#include <bits/stdc++.h>
using namespace std;
const int MN = 2e5+5;
pair<int,int> arr[MN];
long long psa[MN];
int find_subset(int l,int u,int *w,int n,int *res){
int mn = w[0];
for(int i=0;i<n;i++)
mn = min(w[i], mn);
for(int i=0;i<n;i++)
arr[i]={w[i]-mn,i};
int ans = 0;
sort(arr,arr+n,[](pair<int,int>i,pair<int,int>j){return i.first<j.first;});
for(int i=0;i<n;i++) psa[i+1]=psa[i]+arr[i].first;
for(int i=1;i<=n;i++){
long long a=psa[i], b=psa[n]-psa[n-i];
if(a+1LL*i*mn<=1LL*u&&b+1LL*i*mn>=1LL*l){
ans = i;
for(int i=ans;i<=n;i++){
long long tmp = psa[i]-psa[i-ans]+1LL*mn*ans;
if(tmp>=l&&tmp<=u){
for(int j=i-ans;j<i;j++)
res[j-i+ans]=arr[j].second;
return ans;
}
}
}
}
return 0;
}
Compilation message
/tmp/ccfdzynv.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
