結果
| 問題 | No.796 well known |
| ユーザー |
 alpha_virginis
|
| 提出日時 | 2019-03-15 21:29:56 |
| 言語 | Rust (1.77.0 + proconio) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 5,302 bytes |
| コンパイル時間 | 14,996 ms |
| コンパイル使用メモリ | 378,072 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-07-01 20:25:48 |
| 合計ジャッジ時間 | 18,335 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge3 |
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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 | AC | 1 ms
5,248 KB |
| testcase_01 | AC | 1 ms
5,376 KB |
| testcase_02 | AC | 1 ms
5,376 KB |
| testcase_03 | AC | 1 ms
5,376 KB |
| testcase_04 | WA | - |
| 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 | - |
コンパイルメッセージ
warning: unused `Result` that must be used
--> src/main.rs:179:5
|
179 | write!(buf, "1");
| ^^^^^^^^^^^^^^^^
|
= note: this `Result` may be an `Err` variant, which should be handled
= note: `#[warn(unused_must_use)]` on by default
= note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: unused `Result` that must be used
--> src/main.rs:181:9
|
181 | write!(buf, " {}", 3 * i);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this `Result` may be an `Err` variant, which should be handled
= note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: unused `Result` that must be used
--> src/main.rs:183:5
|
183 | writeln!(buf, "");
| ^^^^^^^^^^^^^^^^^
|
= note: this `Result` may be an `Err` variant, which should be handled
= note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
ソースコード
/*------------------------------------------------------------------*/
/*------------------------- begin template -------------------------*/
/*------------------------------------------------------------------*/
// ref: tanakh <https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8>
// diff: using Parser
macro_rules! input {
(source = $s:expr, $($r:tt)*) => {
let mut parser = Parser::from_str($s);
input_inner!{parser, $($r)*}
};
(parser = $parser:ident, $($r:tt)*) => {
input_inner!{$parser, $($r)*}
};
(new_stdin_parser = $parser:ident, $($r:tt)*) => {
let stdin = std::io::stdin();
let reader = std::io::BufReader::new(stdin.lock());
let mut $parser = Parser::new(reader);
input_inner!{$parser, $($r)*}
};
($($r:tt)*) => {
input!{new_stdin_parser = parser, $($r)*}
};
}
macro_rules! input_inner {
($parser:ident) => {};
($parser:ident, ) => {};
($parser:ident, $var:ident : $t:tt $($r:tt)*) => {
let $var = read_value!($parser, $t);
input_inner!{$parser $($r)*}
};
}
macro_rules! read_value {
($parser:ident, ( $($t:tt),* )) => {
( $(read_value!($parser, $t)),* )
};
($parser:ident, [ $t:tt ; $len:expr ]) => {
(0..$len).map(|_| read_value!($parser, $t)).collect::<Vec<_>>()
};
($parser:ident, chars) => {
read_value!($parser, String).chars().collect::<Vec<char>>()
};
($parser:ident, usize1) => {
read_value!($parser, usize) - 1
};
($parser:ident, i64_) => {
$parser.fast_i64()
};
($parser:ident, usize_) => {
$parser.fast_i64() as usize
};
($parser:ident, usize1_) => {
($parser.fast_i64() - 1) as usize
};
($parser:ident, $t:ty) => {
$parser.next::<$t>().expect("Parse error")
};
}
use std::io;
use std::io::BufRead;
use std::str;
// ref: tatsuya6502 <https://qiita.com/tatsuya6502/items/cd448486f7ef7b5b8c7e>
// ref: wariuni <https://qiita.com/tatsuya6502/items/cd448486f7ef7b5b8c7e#comment-7040a5ae96305e884eb9>
// diff: using std::io::BufRead::fill_buf()
pub struct Parser<R> {
pub reader: R,
buf: Vec<u8>,
pos: usize,
}
impl Parser<io::Empty> {
pub fn from_str(s: &str) -> Parser<io::Empty> {
Parser {
reader: io::empty(),
buf: s.as_bytes().to_vec(),
pos: 0,
}
}
}
impl<R: BufRead> Parser<R> {
pub fn new(reader: R) -> Parser<R> {
Parser {
reader: reader,
buf: vec![],
pos: 0,
}
}
pub fn update_buf(&mut self) {
self.buf.clear();
self.pos = 0;
loop {
let (len, complete) = {
let buf2 = self.reader.fill_buf().unwrap();
self.buf.extend_from_slice(buf2);
let len = buf2.len();
(len, buf2[len - 1] <= 0x20)
};
self.reader.consume(len);
if complete {
break;
}
}
}
pub fn next<T: str::FromStr>(&mut self) -> Result<T, T::Err> {
loop {
let mut begin = self.pos;
while begin < self.buf.len() && (self.buf[begin] <= 0x20) {
begin += 1;
}
let mut end = begin;
while end < self.buf.len() && (self.buf[end] > 0x20) {
end += 1;
}
if begin != self.buf.len() {
self.pos = end;
return unsafe { str::from_utf8_unchecked(&self.buf[begin..end]) }.parse::<T>();
} else {
self.update_buf();
}
}
}
pub fn fast_i64(&mut self) -> i64 {
loop {
let mut begin = self.pos;
while begin < self.buf.len() && (self.buf[begin] <= 0x20) {
begin += 1;
}
if begin == self.buf.len() {
self.update_buf();
continue;
}
let mut res = 0;
let (is_positive, mut end) = match self.buf[begin] {
b'+' => (true, begin + 1),
b'-' => (false, begin + 1),
_ => (true, begin),
};
while end < self.buf.len() && (self.buf[end] > 0x20) {
res = res * 10 + (self.buf[end] as i64 - '0' as i64);
end += 1;
}
if begin != self.buf.len() {
self.pos = end;
return if is_positive { res } else { -res };
} else {
self.update_buf();
}
}
}
}
#[allow(unused_imports)]
use std::cmp::*;
fn main() {
input! {
new_stdin_parser = parser,
}
let res = solve(&mut parser);
print!("{}", res);
}
/*------------------------------------------------------------------*/
/*-------------------------- end template --------------------------*/
/*------------------------------------------------------------------*/
use std::fmt::Write;
fn solve<R: BufRead>(parser: &mut Parser<R>) -> String {
let mut buf = String::new();
input! {
parser = parser,
n: usize,
}
write!(buf, "1");
for i in 1..n {
write!(buf, " {}", 3 * i);
}
writeln!(buf, "");
buf
}