結果
問題 | No.994 ばらばらコイン |
ユーザー | koba-e964 |
提出日時 | 2020-02-22 00:26:06 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 14 ms / 2,000 ms |
コード長 | 2,574 bytes |
コンパイル時間 | 12,611 ms |
コンパイル使用メモリ | 380,592 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-09 05:06:19 |
合計ジャッジ時間 | 13,925 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
(要ログイン)
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
5,248 KB |
testcase_02 | AC | 14 ms
5,248 KB |
testcase_03 | AC | 12 ms
5,248 KB |
testcase_04 | AC | 12 ms
5,248 KB |
testcase_05 | AC | 6 ms
5,248 KB |
testcase_06 | AC | 13 ms
5,248 KB |
testcase_07 | AC | 12 ms
5,248 KB |
testcase_08 | AC | 8 ms
5,248 KB |
testcase_09 | AC | 11 ms
5,248 KB |
testcase_10 | AC | 8 ms
5,248 KB |
testcase_11 | AC | 10 ms
5,248 KB |
testcase_12 | AC | 10 ms
5,248 KB |
testcase_13 | AC | 1 ms
5,248 KB |
testcase_14 | AC | 1 ms
5,248 KB |
testcase_15 | AC | 1 ms
5,248 KB |
testcase_16 | AC | 1 ms
5,248 KB |
testcase_17 | AC | 1 ms
5,248 KB |
testcase_18 | AC | 1 ms
5,248 KB |
testcase_19 | AC | 1 ms
5,248 KB |
testcase_20 | AC | 1 ms
5,248 KB |
testcase_21 | AC | 1 ms
5,248 KB |
testcase_22 | AC | 1 ms
5,248 KB |
コンパイルメッセージ
warning: unused variable: `ab` --> src/main.rs:85:9 | 85 | ab: [(usize1, usize1); n - 1], | ^^ | help: `ab` is captured in macro and introduced a unused variable --> src/main.rs:28:13 | 28 | let $var = read_value!($next, $t); | ^^^^ ... 83 | / input! { 84 | | n: usize, k: usize, 85 | | ab: [(usize1, usize1); n - 1], 86 | | } | |_____- in this macro invocation = note: `#[warn(unused_variables)]` on by default = note: this warning originates in the macro `input_inner` which comes from the expansion of the macro `input` (in Nightly builds, run with -Z macro-backtrace for more info) warning: function `dfs` is never used --> src/main.rs:69:4 | 69 | fn dfs(v: usize, par: usize, g: &[Vec<usize>], d: i64, dist: &mut [i64]) { | ^^^ | = note: `#[warn(dead_code)]` on by default
ソースコード
#[allow(unused_imports)] use std::cmp::*; #[allow(unused_imports)] use std::collections::*; use std::io::{Write, BufWriter}; // https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { ($($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)*} }; } 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)*} }; } 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, usize1) => { read_value!($next, usize) - 1 }; ($next:expr, [ $t:tt ]) => {{ let len = read_value!($next, usize); (0..len).map(|_| read_value!($next, $t)).collect::<Vec<_>>() }}; ($next:expr, $t:ty) => { $next().parse::<$t>().expect("Parse error") }; } #[allow(unused)] macro_rules! debug { ($($format:tt)*) => (write!(std::io::stderr(), $($format)*).unwrap()); } #[allow(unused)] macro_rules! debugln { ($($format:tt)*) => (writeln!(std::io::stderr(), $($format)*).unwrap()); } fn dfs(v: usize, par: usize, g: &[Vec<usize>], d: i64, dist: &mut [i64]) { dist[v] = d; for &w in &g[v] { if w == par { continue; } dfs(w, v, g, d + 1, dist); } } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (let _ = write!(out,$($format)*);); } input! { n: usize, k: usize, ab: [(usize1, usize1); n - 1], } if k > n { puts!("-1\n"); return; } puts!("{}\n", k - 1); } fn main() { // In order to avoid potential stack overflow, spawn a new thread. let stack_size = 104_857_600; // 100 MB let thd = std::thread::Builder::new().stack_size(stack_size); thd.spawn(|| solve()).unwrap().join().unwrap(); }