結果
| 問題 |
No.2060 AND Sequence
|
| コンテスト | |
| ユーザー |
shauuebbit
|
| 提出日時 | 2022-09-05 23:10:43 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 29 ms / 2,000 ms |
| コード長 | 3,546 bytes |
| コンパイル時間 | 1,747 ms |
| コンパイル使用メモリ | 198,140 KB |
| 最終ジャッジ日時 | 2025-02-07 02:58:06 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 43 |
ソースコード
#include <bits/stdc++.h>
template <long long mod>
class ModInt {
private:
long long number;
public:
constexpr ModInt(const ModInt& x) : number(x.number) {}
constexpr ModInt(const long long number = 0) : number(number) {
if (number < 0 || number >= mod) this->number %= mod;
if (this->number < 0) this->number += mod;
}
constexpr long long get() const { return number; }
constexpr ModInt& operator=(const ModInt& rhs) & {
number = rhs.number;
return *this;
}
constexpr ModInt operator+() const { return ModInt(*this); }
constexpr ModInt operator-() const { return ModInt(mod - number); }
constexpr ModInt& operator+=(const ModInt& rhs) {
number += rhs.number;
if (number >= mod) number -= mod;
return *this;
}
constexpr ModInt& operator-=(const ModInt& rhs) {
number -= rhs.number;
if (number < 0) number += mod;
return *this;
}
constexpr ModInt& operator*=(const ModInt& rhs) {
number *= rhs.number;
if (number >= mod) number %= mod;
return *this;
}
constexpr ModInt& operator/=(const ModInt& rhs) {
(*this) *= rhs.inverse();
return *this;
}
constexpr ModInt inverse() const {
long long a = number, m = mod, u = 1, v = 0;
while (m) {
long long t = a / m;
a -= t * m;
u -= t * v;
a ^= m;
m ^= a;
a ^= m;
u ^= v;
v ^= u;
u ^= v;
}
return ModInt(u);
}
constexpr ModInt& operator++() { return *this += 1; }
constexpr ModInt& operator--() { return *this -= 1; }
constexpr ModInt operator++(int) {
ModInt ret = *this;
++(*this);
return ret;
}
constexpr ModInt operator--(int) {
ModInt ret = *this;
--(*this);
return ret;
}
constexpr ModInt operator+(const ModInt& rhs) const { return ModInt(*this) += rhs; }
constexpr ModInt operator-(const ModInt& rhs) const { return ModInt(*this) -= rhs; }
constexpr ModInt operator*(const ModInt& rhs) const { return ModInt(*this) *= rhs; }
constexpr ModInt operator/(const ModInt& rhs) const { return ModInt(*this) /= rhs; }
constexpr ModInt operator^(const long long& rhs) const {
long long b = number, e = rhs, y = 1, m = mod;
bool inv = e < 0;
if (inv) e = -e;
while (e) {
if (e & 1) (y *= b) %= m;
(b *= b) %= m;
e >>= 1;
}
return (inv ? ModInt(y).inverse() : ModInt(y));
}
};
template <long long mod>
std::istream& operator>>(std::istream& is, ModInt<mod>& x) {
long long in;
is >> in;
x = in;
return is;
}
template <long long mod>
std::ostream& operator<<(std::ostream& os, const ModInt<mod>& x) {
os << x.get();
return os;
}
constexpr int MOD = 998244353;
constexpr int LEN = 30;
using namespace std;
using mint = ModInt<MOD>;
int main() {
int N, M;
cin >> N >> M;
vector dp(LEN + 1, vector<mint>(2, 0));
dp[0][0] = 1;
for (int k = 0; k < LEN; k++) {
if ((M >> (LEN - k - 1)) & 1) {
dp[k + 1][1] += dp[k][1] * (N + 1);
dp[k + 1][1] += dp[k][0];
dp[k + 1][0] += dp[k][0] * N;
} else {
dp[k + 1][1] += dp[k][1] * (N + 1);
dp[k + 1][0] += dp[k][0];
}
}
cout << dp[LEN][0] + dp[LEN][1] << endl;
return 0;
}
shauuebbit