Submission #1320940

#	Time	Username	Problem	Language	Result	Execution time	Memory
1320940		sameer	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
bool cmp(pair<long long int, long long int> x, pair<long long int, long long int> y){
 return x.first < y.first;
}

vector<long long int> find_subset(long long int l, long long int u, vector<long long int> w) {
 int i, j, k, n = w.size();
 pair<long long int, long long int> p[n+1];
 p[0].first = 0;
 for( i = 1; i <= n; i++) p[i].first = w[i-1], p[i].second = i-1;
 sort(p+1, p+n+1, cmp);
 for( i = 1; i <= n; i++) p[i].first += p[i-1].first;
 for( i = 1; i <= n; i++) if(p[i].first <= u && p[n].first-p[n-i].first >= l) break;
 vector<long long int> ans;
 if(i > n) return ans;
 k = p[i].first;
 for( j = 1; j <= i; j++) ans.push_back(p[j].second);
 j = 1;
 while(k < l){
 k -= p[j].first-p[j-1].first; k += p[n+1-j].first-p[n-j].first;
 ans[j-1] = p[n+1-j].second;
 j++;
 } return ans;
}

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/ccExGYAq.o: in function `main':
grader.cpp:(.text.startup+0x165): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status