Submission #923685

#	Time	Username	Problem	Language	Result	Execution time	Memory
923685		sleepntsheep	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	Compilation error	0 ms	0 KiB

brunhilda

#include <iostream>
#include <queue>
#include <fstream>
#include <iomanip>
#include <cmath>
#include <cassert>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>
#include <complex>

using namespace std;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,tune=native")

#define ALL(x) begin(x), end(x)
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);

#if 1
#define M 100005
#define N 10000005
#else
#define M 20000
#define N 20000
#endif

int m, q, dp[N], yes[N], freq[N];

priority_queue<int, vector<int>, greater<int>> pq;

int si[4000];
vector<int> prime;

struct Precalc {
    unsigned char divisor[1<<16];

    constexpr Precalc() : divisor{} {
        for (int i = 0; i < (1<<16); i++)
            divisor[i] = 1;
        for (int i = 2; i * i < (1<<16); i++)
            if (divisor[i] == 1)
                for (int k = i * i; k < (1<<16); k += i)
                    divisor[k] = i;
    }
};

int main()
{

    for (int i = 2; i < 4000; ++i)
    {
        if (si[i]) continue;
        for (int j = 2 * i; j < 4000; j += i) si[j] = 1;
    }
    for (int i = 2; i < 4000; ++i) if (!si[i]) prime.push_back(i);

    memset(dp, 63, sizeof dp);
    ShinLena;

    dp[0] = 0;
    cin >> m >> q;
    for (int p, i = 1; i <= m; ++i)
    {
        cin >> p;
        yes[p] = 1;
    }

    constexpr Precalc P{};

    auto factorize2 = [&](int n) {
        vector<int> f;

        using u64 = unsigned long long;
        auto find_factor = [&](u64 n){
            if (n < (1 << 16)) return u64(P.divisor[n]);
            for (u64 d : prime)
                if (d * n < d)
                    return u64(-1) / d + 1;
            return 1ull;
        };


        u64 d;
        do {
            f.push_back(d = find_factor(n));
            n /= d;
        } while (d != 1);

        return f;
    };



    for (int i = 1; i < N; ++i) volatile auto F = factorize2(i);
    return 0;

    auto push = [&](int x){
        pq.push(x);
    };

    auto del = [&](int x){
        ++freq[x];
    };

    auto top = [&](){
        while (pq.size())
        {
            int top = pq.top();
            if (freq[top]) --freq[top], pq.pop();
            else return top;
        }
        return int(1e9);
    };

    for (int i = 0; i < m; ++i) push(0);

    for (int i = 1; i < N; ++i)
    {
        auto F = factorize(i);
        for (auto x : F) if (yes[x] and dp[i-x] < N)
            del(dp[i-x]);
    
        dp[i] = min(dp[i], top() + 1);

        if (dp[i] < 1e9)
            for (auto x : F) if (yes[x])
                push(dp[i]);
    }

    for (int x, i = 1; i <= q; ++i)
    {
        cin >> x;
        if (dp[x] >= 1e9) cout << "oo\n";
        else cout << dp[x] << '\n';
    }


    return 0;
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:124:18: error: 'factorize' was not declared in this scope; did you mean 'factorize2'?
  124 |         auto F = factorize(i);
      |                  ^~~~~~~~~
      |                  factorize2