結果
| 問題 |
No.1500 Super Knight
|
| コンテスト | |
| ユーザー |
Strorkis
|
| 提出日時 | 2021-05-07 23:07:25 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 1 ms / 2,000 ms |
| コード長 | 3,242 bytes |
| コンパイル時間 | 15,308 ms |
| コンパイル使用メモリ | 377,776 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-09-15 11:12:59 |
| 合計ジャッジ時間 | 15,325 ms |
|
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 * 2 |
| other | AC * 33 |
ソースコード
pub mod mod_int {
use std::{fmt, ops};
#[derive(Clone, Copy, Debug)]
pub struct ModInt(u64);
impl ModInt {
const MOD: u64 = 1_000_000_007;
pub fn new(mut x: u64) -> Self {
if x >= Self::MOD {
x %= Self::MOD;
}
Self(x)
}
pub fn zero() -> Self {
Self(0)
}
pub fn one() -> Self {
Self(1)
}
}
impl From<usize> for ModInt {
fn from(x: usize) -> Self {
Self::new(x as u64)
}
}
impl From<i64> for ModInt {
fn from(mut x: i64) -> Self {
let m = Self::MOD as i64;
if x.abs() >= m {
x %= m;
}
if x < 0 {
x += m
}
Self::new(x as u64)
}
}
impl ops::Add for ModInt {
type Output = Self;
fn add(self, other: Self) -> Self {
let mut x = self.0 + other.0;
if x >= Self::MOD {
x -= Self::MOD;
}
Self(x)
}
}
impl ops::AddAssign for ModInt {
fn add_assign(&mut self, other: Self) {
*self = *self + other;
}
}
impl ops::Sub for ModInt {
type Output = Self;
fn sub(mut self, other: Self) -> Self {
if self.0 < other.0 {
self.0 += Self::MOD;
}
Self(self.0 - other.0)
}
}
impl ops::SubAssign for ModInt {
fn sub_assign(&mut self, other: Self) {
*self = *self - other;
}
}
impl ops::Mul for ModInt {
type Output = Self;
fn mul(self, other: Self) -> Self {
Self::new(self.0 * other.0)
}
}
impl ops::MulAssign for ModInt {
fn mul_assign(&mut self, other: Self) {
*self = *self * other;
}
}
impl fmt::Display for ModInt {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}", self.0)
}
}
impl ModInt {
pub fn pow(mut self, mut n: u64) -> Self {
let mut res = Self::one();
while n > 0 {
if n & 1 == 1 {
res *= self;
}
self *= self;
n >>= 1;
}
res
}
pub fn inv(self) -> Self {
self.pow(Self::MOD - 2)
}
}
}
use mod_int::ModInt;
fn main() {
let ref mut buf = String::new();
std::io::Read::read_to_string(&mut std::io::stdin(), buf).ok();
let mut iter = buf.split_whitespace();
macro_rules! scan {
([$t:tt; $n:expr]) => ((0..$n).map(|_| scan!($t)).collect::<Vec<_>>());
(($($t:tt),*)) => (($(scan!($t)),*));
(Usize1) => (scan!(usize) - 1);
(Bytes) => (scan!(String).into_bytes());
($t:ty) => (iter.next().unwrap().parse::<$t>().unwrap());
}
let n = scan!(u64);
let ans = match n {
0 => ModInt::one(),
1 => ModInt::new(12),
2 => ModInt::new(65),
_ => ModInt::new(n * 6 + 2) * ModInt::new(n * 3) - ModInt::new(n * n - 1),
};
println!("{}", ans);
}
Strorkis