Submission #900086

#	Time	Username	Problem	Language	Result	Execution time	Memory
900086		mannshah1211	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
using namespace std;

#define int long long 
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(), x.end()
vector<int> find_subset(int l, int u, vector<int> w) {
	  if (accumulate(all(w), 0LL) < l) {
	  	return {};
	  }
    vector<pair<int, int>> indices;
    for (int i = 0; i < w.size(); i++) {
    	indices.pb({w[i], i});
    }
    if (indices[0].f > u) {
    	return {};
    }
    sort(all(indices));
    int cursum = 0, longest = 0;
    for (int i = 0; i < indices.size(); i++) {
    	cursum += indices[i].f;
    	if (cursum >= l) {
    		cursum -= indices[i].f, longest = i;
    		break;
    	}
    }
    for (int i = longest; i < indices.size(); i++) {
    	cursum += indices[i].f;
    	cursum -= indices[i - longest].f;
    	if (cursum >= l && cursum <= u) {
    		vector<int> answer;
    		for (int j = i; j >= i - longest + 1; j--) {
    			answer.pb(indices[j].s);
    		}
    		return answer;
    	}
    }
    return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<long long int> find_subset(long long int, long long int, std::vector<long long int>)':
molecules.cpp:15:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for (int i = 0; i < w.size(); i++) {
      |                     ~~^~~~~~~~~~
molecules.cpp:23:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = 0; i < indices.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~~
molecules.cpp:30:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i = longest; i < indices.size(); i++) {
      |                           ~~^~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cc22iJWM.o: in function `main':
grader.cpp:(.text.startup+0x18d): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status