結果

問題 No.1312 Snake Eyes
ユーザー satashunsatashun
提出日時 2020-12-09 00:05:18
言語 C++17
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 49 ms / 2,000 ms
コード長 4,355 bytes
コンパイル時間 2,617 ms
コンパイル使用メモリ 201,780 KB
実行使用メモリ 6,576 KB
最終ジャッジ日時 2023-08-20 11:05:50
合計ジャッジ時間 7,094 ms
ジャッジサーバーID
(参考情報)
judge13 / judge15
このコードへのチャレンジ
(要ログイン)

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 AC 5 ms
6,268 KB
testcase_01 AC 5 ms
6,448 KB
testcase_02 AC 4 ms
6,296 KB
testcase_03 AC 5 ms
6,412 KB
testcase_04 AC 5 ms
6,244 KB
testcase_05 AC 5 ms
6,248 KB
testcase_06 AC 4 ms
6,380 KB
testcase_07 AC 5 ms
6,488 KB
testcase_08 AC 5 ms
6,428 KB
testcase_09 AC 5 ms
6,552 KB
testcase_10 AC 5 ms
6,280 KB
testcase_11 AC 5 ms
6,348 KB
testcase_12 AC 5 ms
6,352 KB
testcase_13 AC 5 ms
6,416 KB
testcase_14 AC 5 ms
6,352 KB
testcase_15 AC 4 ms
6,476 KB
testcase_16 AC 5 ms
6,544 KB
testcase_17 AC 5 ms
6,412 KB
testcase_18 AC 5 ms
6,512 KB
testcase_19 AC 5 ms
6,268 KB
testcase_20 AC 5 ms
6,272 KB
testcase_21 AC 5 ms
6,436 KB
testcase_22 AC 5 ms
6,240 KB
testcase_23 AC 5 ms
6,284 KB
testcase_24 AC 5 ms
6,244 KB
testcase_25 AC 5 ms
6,388 KB
testcase_26 AC 5 ms
6,344 KB
testcase_27 AC 5 ms
6,296 KB
testcase_28 AC 4 ms
6,328 KB
testcase_29 AC 4 ms
6,328 KB
testcase_30 AC 5 ms
6,408 KB
testcase_31 AC 4 ms
6,328 KB
testcase_32 AC 5 ms
6,492 KB
testcase_33 AC 5 ms
6,328 KB
testcase_34 AC 4 ms
6,344 KB
testcase_35 AC 3 ms
6,484 KB
testcase_36 AC 4 ms
6,436 KB
testcase_37 AC 5 ms
6,416 KB
testcase_38 AC 5 ms
6,416 KB
testcase_39 AC 6 ms
6,348 KB
testcase_40 AC 6 ms
6,412 KB
testcase_41 AC 6 ms
6,280 KB
testcase_42 AC 5 ms
6,296 KB
testcase_43 AC 6 ms
6,484 KB
testcase_44 AC 5 ms
6,480 KB
testcase_45 AC 6 ms
6,376 KB
testcase_46 AC 6 ms
6,348 KB
testcase_47 AC 6 ms
6,428 KB
testcase_48 AC 44 ms
6,576 KB
testcase_49 AC 41 ms
6,484 KB
testcase_50 AC 32 ms
6,412 KB
testcase_51 AC 19 ms
6,352 KB
testcase_52 AC 49 ms
6,272 KB
testcase_53 AC 38 ms
6,424 KB
testcase_54 AC 43 ms
6,448 KB
testcase_55 AC 23 ms
6,280 KB
testcase_56 AC 29 ms
6,324 KB
testcase_57 AC 29 ms
6,504 KB
testcase_58 AC 38 ms
6,328 KB
testcase_59 AC 17 ms
6,244 KB
testcase_60 AC 29 ms
6,436 KB
testcase_61 AC 48 ms
6,376 KB
testcase_62 AC 21 ms
6,244 KB
testcase_63 AC 5 ms
6,276 KB
testcase_64 AC 6 ms
6,412 KB
testcase_65 AC 10 ms
6,284 KB
testcase_66 AC 4 ms
6,348 KB
testcase_67 AC 4 ms
6,348 KB
testcase_68 AC 6 ms
6,348 KB
testcase_69 AC 5 ms
6,476 KB
testcase_70 AC 40 ms
6,448 KB
testcase_71 AC 26 ms
6,424 KB
testcase_72 AC 7 ms
6,348 KB
testcase_73 AC 5 ms
6,388 KB
testcase_74 AC 5 ms
6,416 KB
testcase_75 AC 5 ms
6,388 KB
testcase_76 AC 49 ms
6,348 KB
testcase_77 AC 49 ms
6,272 KB
testcase_78 AC 49 ms
6,240 KB
testcase_79 AC 37 ms
6,416 KB
testcase_80 AC 49 ms
6,476 KB
testcase_81 AC 48 ms
6,504 KB
testcase_82 AC 49 ms
6,292 KB
testcase_83 AC 49 ms
6,384 KB
testcase_84 AC 49 ms
6,268 KB
testcase_85 AC 46 ms
6,416 KB
testcase_86 AC 42 ms
6,416 KB
testcase_87 AC 26 ms
6,352 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using pii = pair<int, int>;
template <class T>
using V = vector<T>;
template <class T>
using VV = V<V<T>>;

#define pb push_back
#define eb emplace_back
#define mp make_pair
#define fi first
#define se second
#define rep(i, n) rep2(i, 0, n)
#define rep2(i, m, n) for (int i = m; i < (n); i++)
#define per(i, b) per2(i, 0, b)
#define per2(i, a, b) for (int i = int(b) - 1; i >= int(a); i--)
#define ALL(c) (c).begin(), (c).end()
#define SZ(x) ((int)(x).size())

constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); }

template <class T, class U>
void chmin(T& t, const U& u) {
    if (t > u) t = u;
}
template <class T, class U>
void chmax(T& t, const U& u) {
    if (t < u) t = u;
}

template <class T, class U>
ostream& operator<<(ostream& os, const pair<T, U>& p) {
    os << "(" << p.first << "," << p.second << ")";
    return os;
}

template <class T>
ostream& operator<<(ostream& os, const vector<T>& v) {
    os << "{";
    rep(i, v.size()) {
        if (i) os << ",";
        os << v[i];
    }
    os << "}";
    return os;
}

#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << " " << H;
    debug_out(T...);
}
#define debug(...) \
    cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif

template <unsigned int MOD>
struct ModInt {
    using uint = unsigned int;
    using ull = unsigned long long;
    using M = ModInt;

    uint v;

    ModInt(ll _v = 0) { set_norm(_v % MOD + MOD); }
    M& set_norm(uint _v) {  //[0, MOD * 2)->[0, MOD)
        v = (_v < MOD) ? _v : _v - MOD;
        return *this;
    }

    explicit operator bool() const { return v != 0; }
    M operator+(const M& a) const { return M().set_norm(v + a.v); }
    M operator-(const M& a) const { return M().set_norm(v + MOD - a.v); }
    M operator*(const M& a) const { return M().set_norm(ull(v) * a.v % MOD); }
    M operator/(const M& a) const { return *this * a.inv(); }
    M& operator+=(const M& a) { return *this = *this + a; }
    M& operator-=(const M& a) { return *this = *this - a; }
    M& operator*=(const M& a) { return *this = *this * a; }
    M& operator/=(const M& a) { return *this = *this / a; }
    M operator-() const { return M() - *this; }
    M& operator++(int) { return *this = *this + 1; }
    M& operator--(int) { return *this = *this - 1; }

    M pow(ll n) const {
        if (n < 0) return inv().pow(-n);
        M x = *this, res = 1;
        while (n) {
            if (n & 1) res *= x;
            x *= x;
            n >>= 1;
        }
        return res;
    }

    M inv() const {
        ll a = v, b = MOD, p = 1, q = 0, t;
        while (b != 0) {
            t = a / b;
            swap(a -= t * b, b);
            swap(p -= t * q, q);
        }
        return M(p);
    }

    bool operator==(const M& a) const { return v == a.v; }
    bool operator!=(const M& a) const { return v != a.v; }
    friend ostream& operator<<(ostream& os, const M& a) { return os << a.v; }
    static uint get_mod() { return MOD; }
};

using Mint = ModInt<998244353>;

const int maxv = 300010;

V<Mint> fact(maxv), ifact(maxv), inv(maxv);

void init() {
    fact[0] = 1;
    for (int i = 1; i < maxv; ++i) {
        fact[i] = fact[i - 1] * i;
    }

    ifact[maxv - 1] = fact[maxv - 1].inv();

    for (int i = maxv - 2; i >= 0; --i) {
        ifact[i] = ifact[i + 1] * (i + 1);
    }

    for (int i = 1; i < maxv; ++i) {
        inv[i] = ifact[i] * fact[i - 1];
    }
}

Mint comb(int n, int r) {
    if (n < 0 || r < 0 || r > n) return Mint(0);
    return fact[n] * ifact[r] * ifact[n - r];
}

int main() {
    ll N;
    cin >> N;
    ll ans = N + 1;

    for (ll i = 1; i * (i + 1) <= N; ++i) {
        if (N % i == 0) {
            ll p = N / i - 1;
            if (p > i) {
                chmin(ans, p);
            }
        }
    }

    for (ll p = 2; p * (p + 1) <= N; ++p) {
        ll d = 1;
        ll s = 0;
        while (true) {
            s += d;
            if (s > N) break;
            if (N % s == 0 && N / s < p) chmin(ans, p);
            d *= p;
        }
    }
    cout << ans << endl;

    return 0;
}
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