結果
問題 | No.129 お年玉(2) |
ユーザー | not_522 |
提出日時 | 2015-07-28 06:25:16 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,087 bytes |
コンパイル時間 | 1,696 ms |
コンパイル使用メモリ | 167,588 KB |
実行使用メモリ | 18,896 KB |
最終ジャッジ日時 | 2024-07-16 04:32:35 |
合計ジャッジ時間 | 7,278 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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 | WA | - |
testcase_01 | AC | 73 ms
18,748 KB |
testcase_02 | AC | 85 ms
18,804 KB |
testcase_03 | AC | 80 ms
18,784 KB |
testcase_04 | AC | 79 ms
18,756 KB |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | AC | 72 ms
18,668 KB |
testcase_30 | AC | 78 ms
18,652 KB |
testcase_31 | AC | 87 ms
18,808 KB |
testcase_32 | WA | - |
testcase_33 | AC | 74 ms
18,724 KB |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | WA | - |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; template<typename T> class Combination { private: vector<vector<T>> comb; public: Combination(int n = 0) : comb(n, vector<T>(n, 0)) { for (int i = 0; i < n; ++i) comb[i][0] = 1; for (int i = 1; i < n; ++i) { for (int j = 1; j < n; ++j) { comb[i][j] = comb[i - 1][j] + comb[i - 1][j - 1]; } } } T combination(int n, int m) { if (n < m) return 0; if (n < (int)comb.size()) return comb[n][m]; T res = 1; for (int i = 0; i < min(m, n - m); ++i) res = res * (n - i) / (i + 1); return res; } T combination_safety(int n, int m) { if (n < m) return 0; if (n < (int)comb.size()) return comb[n][m]; m = min(m, n - m); vector<int> a(m), b(m); iota(a.begin(), a.end(), n - m + 1); iota(b.begin(), b.end(), 1); for (auto i : b) { for (int j = m - n % i - 1; ; j -= i) { if (a[j] % i == 0) { a[j] /= i; break; } } } T res = 1; for (auto i : a) res = res * i; return res; } T repetition(int n, int r) { return combination(n + r - 1, r); } }; namespace arithmetic { template<typename T> class Addition { public: template<typename V> T operator+(const V& v) const { return T(static_cast<const T&>(*this)) += v; } }; template<typename T> class Subtraction { public: template<typename V> T operator-(const V& v) const { return T(static_cast<const T&>(*this)) -= v; } }; template<typename T> class Multiplication { public: template<typename V> T operator*(const V& v) const { return T(static_cast<const T&>(*this)) *= v; } }; template<typename T> class Division { public: template<typename V> T operator/(const V& v) const { return T(static_cast<const T&>(*this)) /= v; } }; template<typename T> class Modulus { public: template<typename V> T operator%(const V& v) const { return T(static_cast<const T&>(*this)) %= v; } }; } template<typename T> class IndivisibleArithmetic : public arithmetic::Addition<T>, public arithmetic::Subtraction<T>, public arithmetic::Multiplication<T> {}; template<typename T> class Arithmetic : public IndivisibleArithmetic<T>, public arithmetic::Division<T> {}; class Inverse { private: long long mod; vector<long long> inv; public: Inverse() {} Inverse(long long mod, long long n = 1000000) : mod(mod) { inv = vector<long long>(n, 1); for (int i = 2; i < n; ++i) inv[i] = inv[mod % i] * (mod - mod / i) % mod; } long long operator()(long long a) const { if (a < (int)inv.size()) return inv[a]; long long b = mod, x = 1, y = 0; while (b) { long long t = a / b; swap(a -= t * b, b); swap(x -= t * y, y); } return (x %= mod) < 0 ? x + mod : x; } }; class Mint : public Arithmetic<Mint> { private: static long long mod; static Inverse inverse; long long val; public: Mint() {} Mint(const long long& val) { this->val = val % mod; if (this->val < 0) this->val += mod; } static void setMod(const long long& m) { mod = m; inverse = Inverse(m); } Mint operator+=(const Mint& m) { val += m.val; if (val >= mod) val -= mod; return *this; } Mint operator-=(const Mint& m) { val -= m.val; if (val < 0) val += mod; return *this; } Mint operator*=(const Mint& m) { val *= m.val; val %= mod; return *this; } Mint operator/=(const Mint& m) { val *= inverse(m.val); val %= mod; return *this; } Mint operator++() {return val += 1;} operator long long() { return val; } Mint identity() const { return 1; } }; long long Mint::mod = 1000000007; Inverse Mint::inverse(1000000007); ostream& operator<<(ostream& os, Mint a) { os << (long long)a; return os; } istream& operator>>(istream& is, Mint& a) { long long n; is >> n; a = n; return is; } int main() { long long n, m; cin >> n >> m; n /= 1000; n %= m; Mint::setMod(1000000000); Combination<Mint> comb; cout << comb.combination_safety(m, n) << endl; }