Submission #546877

#	Time	Username	Problem	Language	Result	Execution time	Memory
546877		fvogel499	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

/*
 * File created on 04/07/2022 at 22:12:14.
 * Link to problem: 
 * Description: 
 * Time complexity: O()
 * Space complexity: O()
 * Status: ---
 * Copyright: Ⓒ 2022 Francois Vogel
*/

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <functional>

using namespace std;
using namespace __gnu_pbds;

#define pii pair<int, int>
#define f first
#define s second

#define vi vector<int>
#define all(x) x.begin(), x.end()
#define size(x) (int)((x).size())
#define pb push_back
#define ins insert
#define cls clear

// #define int ll
#define ll long long
#define ld long double

typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const int siz = 5e5+40;

vi find_subset(int start, int end, vi b) {
    bitset<siz> knapsack;
    knapsack.reset();
    knapsack.flip(0);
    int ori [siz];
    for (int i = 0; i < siz; i++) ori[i] = -1;
    for (int i = 0; i < size(b); i++) {
        bitset<siz> pre = knapsack<<b[i];
        bitset<siz> loc = (pre^knapsack)&pre;
        knapsack |= pre;
        while (loc.any()) {
            int pos = loc._Find_first();
            assert(ori[pos] == -1);
            ori[pos] = i;
            loc.flip(pos);
        }
    }
    vi res;
    for (int i = start; i <= end; i++) if (ori[i] != -1) {
        int x = i;
        while (x > 0) {
            res.pb(ori[x]);
            x -= b[ori[x]];
        }
        break;
    }
    return res;
}

signed main() {
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    int n, l, u;
    cin >> n >> l >> u;
    vi b(n);
    for (int i = 0; i < n; i++) cin >> b[i];
    vi res = find_subset(l, u, b);
    for (int i : res) cout << i << ' ';

    cout.flush();
    int d = 0;
    d++;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccjuH50I.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccFuKdtH.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status