Submission #1001735

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001735		vjudge1	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
#pragma GCC optimize("-O3")
#define ll int
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define f first
#define s second
#define pb push_back
#define p_b pop_back
using namespace std;
vl find_subset(ll l, ll u, vl w) {
    vl ans;
    vector<pll>vect;
    for(ll i = 0; i < w.size(); i++)
        vect.pb({w[i], i});
    sort(all(vect));
    ll tl = 0, tr = 0, sum = 0;
    while(tl < vect.size())
    {
        while(tr < vect.size() && sum + vect[tr].f <= u)
        {
            sum += vect[tr].f;
            tr++;
            if(l <= sum && sum <= u)
            {
                for(ll j = tl; j < tr; j++)
                    ans.pb(vect[j].s);
                return ans;
            }
        }
        if(l <= sum && sum <= u)
        {
            for(ll j = tl; j < tr; j++)
                ans.pb(vect[j].s);
            return ans;
        }
        sum -= vect[tl].f;
        tl++;
    }
    return ans;
}
int main()
{
    int n, l, u;
    vi w;
    cin >> n >> l >> u;
    for(int i = 0; i < n; i++)
    {
        int x;
        cin >> x;
        w.pb(x);
    }
    vi res = find_subset(l, u, w);
    for(auto u : res)
        cout << u << ' ';
    cout << "\n";
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:20:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(ll i = 0; i < w.size(); i++)
      |                   ~~^~~~~~~~~~
molecules.cpp:24:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     while(tl < vect.size())
      |           ~~~^~~~~~~~~~~~~
molecules.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         while(tr < vect.size() && sum + vect[tr].f <= u)
      |               ~~~^~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccuyue7c.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccLYrin9.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status