Submission #1211904

#	Time	Username	Problem	Language	Result	Execution time	Memory
1211904		countless	Detecting Molecules (IOI16_molecules)	C++20	19 / 100	0 ms	328 KiB

molecules

#include "molecules.h"
#include <cstdint>
#include <random>
#include <bitset>
#include <vector>
#include <iostream>
#include <cassert>
// #include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;

const ll MOD = 998244353;
const ll INF = 1e18;
const ld EPS = 1e-12;

#define endl "\n"
#define sp <<" "<<
#define REP(i, a, b) for(ll i = a; i < b; i++)
#define dbg(x) cout << #x << " = " << x << endl
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define fast_io() ios_base::sync_with_stdio(false); cin.tie(NULL)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((ll)(x).size())

const int MAXN = 1e3+5;
bitset<MAXN> dp;

vector<int> find_subset(int l, int r, vector<int> w) {
    assert(l <= 5e5 and r <= 5e5);

    int n = w.size();

    dp[0] = 1;
    for (int i = 0; i < n; i++) {
        dp |= (dp << w[i]);
    }

    int diff = MAXN - r - 1;
    dp <<= diff, dp >>= diff;
    dp >>= l;

    int o = dp._Find_first();
    int x = l + o;
    vector<int> kp(x+1, 0), pr(x+1, -1);
    kp[0] = 1;
    REP(i, 0, n) {
        for (int j = x - w[i]; j >= 0; j--) {
            if (kp[j] and !kp[j + w[i]]) {
                kp[j + w[i]] = true;
                pr[j + w[i]] = i;
            }
        }
    }

    vector<int> ans;
    while (x and pr[x] != -1) {
        ans.push_back(pr[x]);
        x -= w[pr[x]];
    }

    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
      |         ^~~~

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