結果
問題 | No.1318 ABCD quadruplets |
ユーザー | ikd |
提出日時 | 2020-12-16 20:09:22 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 722 ms / 2,000 ms |
コード長 | 2,959 bytes |
コンパイル時間 | 11,770 ms |
コンパイル使用メモリ | 379,940 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-20 05:17:41 |
合計ジャッジ時間 | 19,842 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 30 |
ソースコード
fn main() { let stdin = std::io::stdin(); let mut rd = ProconReader::new(stdin.lock()); let n: usize = rd.get(); let m: usize = rd.get(); let mut ans = vec![0u64; n + 1]; for a in 0..=m { for b in a..=m { for c in b..=m { for d in c..=m { let s = a * a + a * b + a * c + a * d + b * b + b * c + b * d + c * c + c * d + d * d; if s > n { break; } if a == b && b == c && c == d && d == a { ans[s] += 1; } else if (a == b && b == c) || (b == c && c == d) || (c == d && d == a) { ans[s] += 4; } else if (a == b && c == d) || (b == c && d == a) { ans[s] += 6; } else if (a == b) || (b == c) || (c == d) || (d == a) { ans[s] += 12; } else { ans[s] += 24; } } } } } for a in ans { println!("{}", a); } } pub struct ProconReader<R> { r: R, line: String, i: usize, } impl<R: std::io::BufRead> ProconReader<R> { pub fn new(reader: R) -> Self { Self { r: reader, line: String::new(), i: 0, } } pub fn get<T>(&mut self) -> T where T: std::str::FromStr, <T as std::str::FromStr>::Err: std::fmt::Debug, { self.skip_blanks(); assert!(self.i < self.line.len()); assert_ne!(&self.line[self.i..=self.i], " "); let line = &self.line[self.i..]; let end = line.find(' ').unwrap_or_else(|| line.len()); let s = &line[..end]; self.i += end; s.parse() .unwrap_or_else(|_| panic!("parse error `{}`", self.line)) } fn skip_blanks(&mut self) { loop { let start = self.line[self.i..].find(|ch| ch != ' '); match start { Some(j) => { self.i += j; break; } None => { self.line.clear(); self.i = 0; let num_bytes = self.r.read_line(&mut self.line).unwrap(); assert!(num_bytes > 0, "reached EOF :("); self.line = self.line.trim_end_matches(&['\r', '\n'][..]).to_string(); } } } } pub fn get_vec<T>(&mut self, n: usize) -> Vec<T> where T: std::str::FromStr, <T as std::str::FromStr>::Err: std::fmt::Debug, { (0..n).map(|_| self.get()).collect() } }