Submission #3975890
Source Code Expand
#[allow(unused_imports)]
use std::cmp::{max, min, Ordering};
#[allow(unused_imports)]
use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque};
#[allow(unused_imports)]
use std::io::{stdin, stdout, BufWriter, StdoutLock, Write};
#[allow(unused_imports)]
use std::iter::FromIterator;
#[allow(unused_macros)]
macro_rules ! input { ( source = $ s : expr , $ ( $ r : tt ) * ) => { let mut iter = $ s . split_whitespace ( ) ; let mut next = || { iter . next ( ) . unwrap ( ) } ; input_inner ! { next , $ ( $ r ) * } } ; ( $ ( $ r : tt ) * ) => { let stdin = std :: io :: stdin ( ) ; let mut bytes = std :: io :: Read :: bytes ( std :: io :: BufReader :: new ( stdin . lock ( ) ) ) ; let mut next = move || -> String { bytes . by_ref ( ) . map ( | r | r . unwrap ( ) as char ) . skip_while ( | c | c . is_whitespace ( ) ) . take_while ( | c |! c . is_whitespace ( ) ) . collect ( ) } ; input_inner ! { next , $ ( $ r ) * } } ; }
#[allow(unused_macros)]
macro_rules ! input_inner { ( $ next : expr ) => { } ; ( $ next : expr , ) => { } ; ( $ next : expr , $ var : ident : $ t : tt $ ( $ r : tt ) * ) => { let $ var = read_value ! ( $ next , $ t ) ; input_inner ! { $ next $ ( $ r ) * } } ; }
#[allow(unused_macros)]
macro_rules ! read_value { ( $ next : expr , ( $ ( $ t : tt ) ,* ) ) => { ( $ ( read_value ! ( $ next , $ t ) ) ,* ) } ; ( $ next : expr , [ $ t : tt ; $ len : expr ] ) => { ( 0 ..$ len ) . map ( | _ | read_value ! ( $ next , $ t ) ) . collect ::< Vec < _ >> ( ) } ; ( $ next : expr , chars ) => { read_value ! ( $ next , String ) . chars ( ) . collect ::< Vec < char >> ( ) } ; ( $ next : expr , bytes ) => { read_value ! ( $ next , String ) . into_bytes ( ) } ; ( $ next : expr , usize1 ) => { read_value ! ( $ next , usize ) - 1 } ; ( $ next : expr , $ t : ty ) => { $ next ( ) . parse ::<$ t > ( ) . expect ( "Parse error" ) } ; }
#[allow(dead_code)]
pub fn with_bufwriter<F: FnOnce(BufWriter<StdoutLock>) -> ()>(f: F) {
let out = stdout();
let writer = BufWriter::new(out.lock());
f(writer)
}
#[allow(unused_macros)]
macro_rules ! debug { ( $ ( $ a : expr ) ,* ) => { eprintln ! ( concat ! ( $ ( stringify ! ( $ a ) , " = {:?}, " ) ,* ) , $ ( $ a ) ,* ) } ; }
#[allow(dead_code)]
fn main() {
input!{
n: usize,
k: usize,
r: [i64; n],
}
let mut ans: f64 = 0.0;
let mut r = r;
r.sort();
for i in n-k..n {
ans = (ans + r[i] as f64) / 2.0;
//debug!(ans);
}
println!("{:.6}", ans);
}
Submission Info
Submission Time |
|
Task |
C - AtCoderプログラミング講座 |
User |
wh317706 |
Language |
Rust (1.15.1) |
Score |
100 |
Code Size |
2538 Byte |
Status |
AC |
Exec Time |
2 ms |
Memory |
4352 KB |
Judge Result
Set Name |
All |
Score / Max Score |
100 / 100 |
Status |
|
Set Name |
Test Cases |
All |
00_sample_01.txt, 00_sample_02.txt, 00_sample_03.txt, 00_sample_04.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt |
Case Name |
Status |
Exec Time |
Memory |
00_sample_01.txt |
AC |
2 ms |
4352 KB |
00_sample_02.txt |
AC |
2 ms |
4352 KB |
00_sample_03.txt |
AC |
2 ms |
4352 KB |
00_sample_04.txt |
AC |
2 ms |
4352 KB |
test_01.txt |
AC |
2 ms |
4352 KB |
test_02.txt |
AC |
2 ms |
4352 KB |
test_03.txt |
AC |
2 ms |
4352 KB |
test_04.txt |
AC |
2 ms |
4352 KB |
test_05.txt |
AC |
2 ms |
4352 KB |
test_06.txt |
AC |
2 ms |
4352 KB |
test_07.txt |
AC |
2 ms |
4352 KB |
test_08.txt |
AC |
2 ms |
4352 KB |
test_09.txt |
AC |
2 ms |
4352 KB |
test_10.txt |
AC |
2 ms |
4352 KB |
test_11.txt |
AC |
2 ms |
4352 KB |
test_12.txt |
AC |
2 ms |
4352 KB |
test_13.txt |
AC |
2 ms |
4352 KB |
test_14.txt |
AC |
2 ms |
4352 KB |
test_15.txt |
AC |
2 ms |
4352 KB |
test_16.txt |
AC |
2 ms |
4352 KB |
test_17.txt |
AC |
2 ms |
4352 KB |
test_18.txt |
AC |
2 ms |
4352 KB |
test_19.txt |
AC |
2 ms |
4352 KB |
test_20.txt |
AC |
2 ms |
4352 KB |
test_21.txt |
AC |
2 ms |
4352 KB |
test_22.txt |
AC |
2 ms |
4352 KB |
test_23.txt |
AC |
2 ms |
4352 KB |
test_24.txt |
AC |
2 ms |
4352 KB |
test_25.txt |
AC |
2 ms |
4352 KB |
test_26.txt |
AC |
2 ms |
4352 KB |
test_27.txt |
AC |
2 ms |
4352 KB |
test_28.txt |
AC |
2 ms |
4352 KB |
test_29.txt |
AC |
2 ms |
4352 KB |
test_30.txt |
AC |
2 ms |
4352 KB |