Submission #995435

#	Time	Username	Problem	Language	Result	Execution time	Memory
995435		The_Samurai	Detecting Molecules (IOI16_molecules)	C++17	69 / 100	272 ms	5208 KiB

molecules

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

const int N = 5e5 + 5;

std::vector<int> find_subset(int l, int r, std::vector<int> w) {
    int n = w.size();
    bitset<N> old;
    old.set(0, true);
    vector<int> dp(N, -1);
    if (*min_element(w.begin(), w.end()) > r) return {};
    if (accumulate(w.begin(), w.end(), 0ll) < l) return {};

    for (int i = 0; i < n; i++) {
        bitset<N> nw = old | (old << w[i]);
        bitset<N> shit = old ^ nw;
        old = nw;
        int x = shit._Find_first();
        while (x < N) {
            dp[x] = i;
            shit.set(x, false);
            x = shit._Find_next(x);
        }
    }
    int x = -1;
    for (int i = l; i <= r and x == -1; i++) if (old[i]) x = i;
    if (x == -1) return {};
    // assert(x != -1);
    vector<int> ans;
    while (x > 0) {
        ans.emplace_back(dp[x]);
        x -= w[dp[x]];
    }
    sort(ans.begin(), ans.end());
    return ans;
}

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 0 / 31