結果

問題 No.1252 数字根D
ユーザー o2c
提出日時 2020-10-10 00:01:56
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 2,717 bytes
コンパイル時間 13,671 ms
コンパイル使用メモリ 383,264 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-07-20 14:49:59
合計ジャッジ時間 13,539 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 14
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#![allow(unused_imports)]
use {std::cmp::*, std::collections::*, std::io::Write, std::ops::*};
#[allow(unused_macros)]
macro_rules !dbg {($($e :expr ) ,*) =>{#[cfg (debug_assertions ) ] $({let (e ,mut err ) =(stringify !($e ) ,std ::io ::stderr () ) ;writeln !(err ,"{}
    = {:?}" ,e ,$e ) .unwrap () } ) *} ;}
#[allow(unused_macros)]
macro_rules !min {($a :expr $(,) *) =>{{$a } } ;($a :expr ,$b :expr $(,) *) =>{{std ::cmp ::min ($a ,$b ) } } ;($a :expr ,$($rest :expr ) ,+$(,) *)
    =>{{std ::cmp ::min ($a ,min !($($rest ) ,+) ) } } ;}
#[allow(unused_macros)]
macro_rules !chmin {($base :expr ,$($cmps :expr ) ,+$(,) *) =>{{let cmp_min =min !($($cmps ) ,+) ;if $base >cmp_min {$base =cmp_min ;true } else
    {false } } } ;}
#[allow(unused_macros)]
macro_rules !max {($a :expr $(,) *) =>{{$a } } ;($a :expr ,$b :expr $(,) *) =>{{std ::cmp ::max ($a ,$b ) } } ;($a :expr ,$($rest :expr ) ,+$(,) *)
    =>{{std ::cmp ::max ($a ,max !($($rest ) ,+) ) } } ;}
#[allow(unused_macros)]
macro_rules !chmax {($base :expr ,$($cmps :expr ) ,+$(,) *) =>{{let cmp_max =max !($($cmps ) ,+) ;if $base <cmp_max {$base =cmp_max ;true } else
    {false } } } ;}
#[allow(dead_code)]
mod scanner {
use std;
use std::io::Read;
use std::str::FromStr;
use std::str::SplitWhitespace;
pub struct Scanner<'a> {
it: SplitWhitespace<'a>,
}
impl<'a> Scanner<'a> {
pub fn new(s: &'a String) -> Scanner<'a> {
Scanner {
it: s.split_whitespace(),
}
}
pub fn next<T: FromStr>(&mut self) -> T {
match self.it.next().unwrap().parse::<T>() {
Ok(v) => v,
_ => panic!("Scanner error"),
}
}
pub fn next_chars(&mut self) -> Vec<char> {
self.next::<String>().chars().collect()
}
pub fn next_vec<T: FromStr>(&mut self, len: usize) -> Vec<T> {
(0..len).map(|_| self.next()).collect()
}
}
pub fn read_string() -> String {
let mut s = String::new();
std::io::stdin().read_to_string(&mut s).unwrap();
s
}
}
fn main() {
let sc = scanner::read_string();
let mut sc = scanner::Scanner::new(&sc);
let out = std::io::stdout();
let mut out = std::io::BufWriter::new(out.lock());
let t: usize = sc.next();
for _ in 0..t {
let d: usize = sc.next();
let a: usize = sc.next();
let b: usize = sc.next();
let mut ans = g(b, d);
if a != 0 {
ans -= g(a-1, d);
}
writeln!(out, "{}", ans).unwrap();
}
}
fn g(x: usize, d: usize) -> usize {
let q = x / (d - 1);
let r = x % (d - 1);
(d * (d - 1)) / 2 * q + (r * (r + 1)) / 2
}
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