Submission #1264540

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264540		happyboy	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second

long long n,l,u,w[200000];
pair<long long,int> p[200000];

bool o(pair<long long,int> a,pair<long long,int> b){
    return a.f<b.f;
}

int main(){
    cin>>n>>l>>u;
    for (int i=0;i<n;i++){
        cin>>w[i];
        p[i]={w[i],i};
    }
    sort(p,p+n,o);
    int l1=0,r1=0;
    long long sum=p[0].f;
    while (l1<=r1){
        if (sum>=l&&sum<=u){
            cout<<r1-l1+1<<"\n";
            for (int i=l1;i<=r1;i++){
                if (i!=l1) cout<<" ";
                cout<<p[i].s;
            }
            cout<<"\n";
            return 0;
        }
        else if (sum<l&&r1<n) sum+=p[++r1].f;
        else sum-=p[l1++].f;
    }
    cout<<"0\n";
}

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
/usr/bin/ld: /tmp/ccoWZ8h2.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccQQjj9h.o:molecules.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccoWZ8h2.o: in function `main':
grader.cpp:(.text.startup+0x173): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status