結果

問題 No.2610 Decreasing LCMs
ユーザー ForestedForested
提出日時 2024-01-19 22:43:50
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
TLE  
実行時間 -
コード長 5,380 bytes
コンパイル時間 2,528 ms
コンパイル使用メモリ 214,284 KB
実行使用メモリ 439,048 KB
最終ジャッジ日時 2024-09-28 04:52:35
合計ジャッジ時間 33,888 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 TLE -
testcase_01 TLE -
testcase_02 TLE -
testcase_03 TLE -
testcase_04 TLE -
testcase_05 TLE -
testcase_06 TLE -
testcase_07 TLE -
testcase_08 TLE -
testcase_09 TLE -
testcase_10 TLE -
testcase_11 TLE -
testcase_12 TLE -
testcase_13 TLE -
testcase_14 TLE -
testcase_15 TLE -
testcase_16 TLE -
testcase_17 TLE -
testcase_18 TLE -
testcase_19 TLE -
testcase_20 TLE -
testcase_21 TLE -
testcase_22 TLE -
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ソースコード

diff #

#ifndef LOCAL
#define FAST_IO
#endif

// ============
#include <bits/stdc++.h>
#define OVERRIDE(a, b, c, d, ...) d
#define REP2(i, n) for (i32 i = 0; i < (i32)(n); ++i)
#define REP3(i, m, n) for (i32 i = (i32)(m); i < (i32)(n); ++i)
#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
#define PER2(i, n) for (i32 i = (i32)(n)-1; i >= 0; --i)
#define PER3(i, m, n) for (i32 i = (i32)(n)-1; i >= (i32)(m); --i)
#define PER(...) OVERRIDE(__VA_ARGS__, PER3, PER2)(__VA_ARGS__)
#define ALL(x) begin(x), end(x)
#define LEN(x) (i32)(x.size())
using namespace std;
using u32 = unsigned int;
using u64 = unsigned long long;
using i32 = signed int;
using i64 = signed long long;
using f64 = double;
using f80 = long double;
using pi = pair<i32, i32>;
using pl = pair<i64, i64>;
template <typename T>
using V = vector<T>;
template <typename T>
using VV = V<V<T>>;
template <typename T>
using VVV = V<V<V<T>>>;
template <typename T>
using VVVV = V<V<V<V<T>>>>;
template <typename T>
using PQR = priority_queue<T, V<T>, greater<T>>;
template <typename T>
bool chmin(T &x, const T &y) {
    if (x > y) {
        x = y;
        return true;
    }
    return false;
}
template <typename T>
bool chmax(T &x, const T &y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}
template <typename T>
i32 lob(const V<T> &arr, const T &v) {
    return (i32)(lower_bound(ALL(arr), v) - arr.begin());
}
template <typename T>
i32 upb(const V<T> &arr, const T &v) {
    return (i32)(upper_bound(ALL(arr), v) - arr.begin());
}
template <typename T>
V<i32> argsort(const V<T> &arr) {
    V<i32> ret(arr.size());
    iota(ALL(ret), 0);
    sort(ALL(ret), [&](i32 i, i32 j) -> bool {
        if (arr[i] == arr[j]) {
            return i < j;
        } else {
            return arr[i] < arr[j];
        }
    });
    return ret;
}
#ifdef INT128
using u128 = __uint128_t;
using i128 = __int128_t;
#endif
[[maybe_unused]] constexpr i32 INF = 1000000100;
[[maybe_unused]] constexpr i64 INF64 = 3000000000000000100;
struct SetUpIO {
    SetUpIO() {
#ifdef FAST_IO
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
#endif
        cout << fixed << setprecision(15);
    }
} set_up_io;
void scan(char &x) { cin >> x; }
void scan(u32 &x) { cin >> x; }
void scan(u64 &x) { cin >> x; }
void scan(i32 &x) { cin >> x; }
void scan(i64 &x) { cin >> x; }
void scan(string &x) { cin >> x; }
template <typename T>
void scan(V<T> &x) {
    for (T &ele : x) {
        scan(ele);
    }
}
void read() {}
template <typename Head, typename... Tail>
void read(Head &head, Tail &...tail) {
    scan(head);
    read(tail...);
}
#define CHAR(...)     \
    char __VA_ARGS__; \
    read(__VA_ARGS__);
#define U32(...)     \
    u32 __VA_ARGS__; \
    read(__VA_ARGS__);
#define U64(...)     \
    u64 __VA_ARGS__; \
    read(__VA_ARGS__);
#define I32(...)     \
    i32 __VA_ARGS__; \
    read(__VA_ARGS__);
#define I64(...)     \
    i64 __VA_ARGS__; \
    read(__VA_ARGS__);
#define STR(...)        \
    string __VA_ARGS__; \
    read(__VA_ARGS__);
#define VEC(type, name, size) \
    V<type> name(size);       \
    read(name);
#define VVEC(type, name, size1, size2)    \
    VV<type> name(size1, V<type>(size2)); \
    read(name);
// ============

#ifdef DEBUGF
#else
#define DBG(...) (void)0
#endif

// ============

#include <vector>
#include <numeric>

class LinearSieve {
    std::vector<int> mpf;
    std::vector<int> ps;
    
public:
    LinearSieve(int n) : mpf(n + 1) {
        std::iota(mpf.begin(), mpf.end(), 0);
        for (int i = 2; i <= n; ++i) {
            if (mpf[i] == i) {
                ps.push_back(i);
            }
            for (int p : ps) {
                if (p > mpf[i] || i * p > n) {
                    break;
                }
                mpf[p * i] = p;
            }
        }
    }
    
    int min_prime_factor(int n) const {
        assert(n >= 2 && n < (int) mpf.size());
        return mpf[n];
    }
    
    std::vector<int> primes() const {
        return ps;
    }
    
    bool is_prime(int n) const {
        assert(n < (int) mpf.size());
        return n >= 2 && mpf[n] == n;
    }
    
    std::vector<std::pair<int, int>> factorize(int n) const {
        assert(n > 0 && n < mpf.size());
        std::vector<std::pair<int, int>> ret;
        while (n > 1) {
            int p = mpf[n];
            int ex = 0;
            while (n % p == 0) {
                n /= p;
                ++ex;
            }
            ret.emplace_back(p, ex);
        }
        return ret;
    }
};

// ============

void solve() {
    LinearSieve sieve(100000000);
    I32(n);
    V<i32> ps = sieve.primes();
    V<i32> a(n, 1);
    REP(i, n - 2) {
        a[i + 1] *= ps[i];
        a[i + 2] *= ps[i];
    }
    DBG(a);
    constexpr i32 MAX = 100000000;
    set<i32> used;
    i32 mx = MAX;
    PER(i, n) {
        i32 itr = LEN(ps) - 1;
        while ((i64)a[i] * ps[itr] >= mx || used.count(itr)) {
            --itr;
        }
        a[i] *= ps[itr];
        mx = a[i];
        used.insert(itr);
    }
    DBG(a);
    REP(i, n - 1) {
        DBG(gcd(a[i], a[i + 1]));
    }
    REP(i, n - 2) {
        assert(lcm((i64)a[i], (i64)a[i + 1]) > lcm((i64)a[i + 1], (i64)a[i + 2]));
    }
    REP(i, n) {
        cout << a[i] << " \n"[i + 1 == n];
    }
}

int main() {
    i32 t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
}
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