結果
| 問題 |
No.1299 Random Array Score
|
| コンテスト | |
| ユーザー |
uw_yu1rabbit
|
| 提出日時 | 2020-12-11 17:53:43 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 957 bytes |
| コンパイル時間 | 11,605 ms |
| コンパイル使用メモリ | 377,868 KB |
| 実行使用メモリ | 6,948 KB |
| 最終ジャッジ日時 | 2024-09-19 21:25:33 |
| 合計ジャッジ時間 | 13,632 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 3 WA * 31 |
コンパイルメッセージ
warning: unused import: `std::cmp::*` --> src/main.rs:3:5 | 3 | use std::cmp::*; | ^^^^^^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: unused import: `std::collections::*` --> src/main.rs:4:5 | 4 | use std::collections::*; | ^^^^^^^^^^^^^^^^^^^ warning: variable does not need to be mutable --> src/main.rs:23:9 | 23 | let mut k:u64 = read(); | ----^ | | | help: remove this `mut` | = note: `#[warn(unused_mut)]` on by default warning: variable does not need to be mutable --> src/main.rs:24:9 | 24 | let mut a:Vec<u64> = (0..n).map(|_| read()).collect(); | ----^ | | | help: remove this `mut` warning: variable does not need to be mutable --> src/main.rs:25:9 | 25 | let mut f:u64 = a.into_iter().sum(); | ----^ | | | help: remove this `mut` warning: constant `Mod` should have an upper case name --> src/main.rs:20:7 | 20 | const Mod:u64 = 998244353; | ^^^ help: convert the identifier to upper case: `MOD` | = note: `#[warn(non_upper_case_globals)]` on by default
ソースコード
#[allow(unused_imports)]
use proconio::*;
use std::cmp::*;
use std::collections::*;
use std::io::*;
use std::iter::*;
use std::str::FromStr;
fn read<T: FromStr>() -> T {
let stdin = stdin();
let stdin = stdin.lock();
let token: String = stdin
.bytes()
.map(|c| c.expect("failed to read char") as char)
.skip_while(|c| c.is_whitespace())
.take_while(|c| !c.is_whitespace())
.collect();
token.parse().ok().expect("failed to parse token")
}
const Mod:u64 = 998244353;
fn main() {
let n:usize = read();
let mut k:u64 = read();
let mut a:Vec<u64> = (0..n).map(|_| read()).collect();
let mut f:u64 = a.into_iter().sum();
println!("{}",(rep_mul(2u64,k) * f) % Mod);
}
fn rep_mul(mut x: u64, mut n: u64) -> u64{
let mut ans:u64 = 1;
while n > 0{
if n % 2 == 1 {
ans = x * ans % Mod;
}
x = x * x % Mod;
n = n >> 1u64;
}
ans
}
uw_yu1rabbit