結果
問題 | No.1417 100の倍数かつ正整数(2) |
ユーザー | m_tsubasa |
提出日時 | 2021-03-05 21:37:12 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 132 ms / 3,000 ms |
コード長 | 2,596 bytes |
コンパイル時間 | 2,149 ms |
コンパイル使用メモリ | 206,640 KB |
最終ジャッジ日時 | 2025-01-19 10:44:10 |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 36 |
ソースコード
#include <bits/stdc++.h> using namespace std; template <int mod = (int)(1e9 + 7)> struct ModInt { int x; constexpr ModInt() : x(0) {} constexpr ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} constexpr ModInt &operator+=(const ModInt &p) noexcept { if ((x += p.x) >= mod) x -= mod; return *this; } constexpr ModInt &operator-=(const ModInt &p) noexcept { if ((x += mod - p.x) >= mod) x -= mod; return *this; } constexpr ModInt &operator*=(const ModInt &p) noexcept { x = (int)(1LL * x * p.x % mod); return *this; } constexpr ModInt &operator/=(const ModInt &p) noexcept { *this *= p.inverse(); return *this; } constexpr ModInt operator-() const { return ModInt(-x); } constexpr ModInt operator+(const ModInt &p) const noexcept { return ModInt(*this) += p; } constexpr ModInt operator-(const ModInt &p) const noexcept { return ModInt(*this) -= p; } constexpr ModInt operator*(const ModInt &p) const noexcept { return ModInt(*this) *= p; } constexpr ModInt operator/(const ModInt &p) const noexcept { return ModInt(*this) /= p; } constexpr bool operator==(const ModInt &p) const noexcept { return x == p.x; } constexpr bool operator!=(const ModInt &p) const noexcept { return x != p.x; } constexpr ModInt inverse() const noexcept { int a = x, b = mod, u = 1, v = 0, t = 0; while (b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } constexpr ModInt pow(int64_t n) const { ModInt res(1), mul(x); while (n) { if (n & 1) res *= mul; mul *= mul; n >>= 1; } return res; } friend constexpr ostream &operator<<(ostream &os, const ModInt &p) noexcept { return os << p.x; } friend constexpr istream &operator>>(istream &is, ModInt &a) noexcept { int64_t t = 0; is >> t; a = ModInt<mod>(t); return (is); } constexpr int get_mod() { return mod; } }; using mint = ModInt<>; int len; string n; mint solve(); int main() { cin >> n; len = n.size(); cout << solve() << endl; return 0; } mint solve() { vector<vector<vector<mint>>> dp; dp.assign(len + 1, vector(100, vector<mint>(2, 0))); dp[0][1][0] = 1; for (int i = 0; i < len; ++i) { dp[i + 1][1][1] += 1; for (int j = 0; j < 100; ++j) for (int p = 1; p < 10; ++p) { dp[i + 1][(j * p) % 100][1] += dp[i][j][1]; if (p <= n[i] - '0') dp[i + 1][(j * p) % 100][p < n[i] - '0'] += dp[i][j][0]; } } return dp[len][0][0] + dp[len][0][1]; }