Submission #1178439

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178439		batman3747	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include "bits/stdc++.h"
#define all(x) (x).begin(), (x).end()
#define debug(x) cerr << (#x) << " " << (x) << endl
#define SZ(s) ((int)s.size())
#define pb push_back
#define ff first
#define ss second
#define int long long
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

vi find_subset(int s, int e, vi w){
    int n = SZ(w);
    vector<pii> a(n);
    for(int i = 0; i < n; i ++) a[i] = {w[i], i};
    sort(all(a));
    int sum = 0;
    vi ans;
    for(int i = 0, j = 0; i < n; i ++){
        sum += a[i].ff;
        while(sum > e) sum -= a[j ++].ff;
        if(sum >= s){
            for(int k = j; k <= i; k ++) ans.pb(a[k].ss);
            break;
        }
    }
    return ans;
}

//int main(){
//  ios::sync_with_stdio(0);
//  cin.tie(0);
//  cout.tie(0);
//  return 0; 
//}

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/ccCDWg7a.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