// use std::ops::{Index, IndexMut}; // use std::cmp::{Ordering, min, max}; // use std::collections::{BinaryHeap, BTreeMap}; // use std::collections::btree_map::Entry::{Occupied, Vacant}; // use std::clone::Clone; fn getline() -> String { let mut res = String::new(); std::io::stdin().read_line(&mut res).ok(); res } macro_rules! readl { ($t: ty) => { { let s = getline(); s.trim().parse::<$t>().unwrap() } }; ($( $t: ty),+ ) => { { let s = getline(); let mut iter = s.trim().split(' '); ($(iter.next().unwrap().parse::<$t>().unwrap(),)*) } }; } macro_rules! readlvec { ($t: ty) => { { let s = getline(); let iter = s.trim().split(' '); iter.map(|x| x.parse().unwrap()).collect::>() } } } macro_rules! debug { ($x: expr) => { println!("{}: {:?}", stringify!($x), $x) } } fn printiter<'a, T>(v: &'a T) where &'a T: std::iter::IntoIterator, <&'a T as std::iter::IntoIterator>::Item: std::fmt::Display, { for (i, e) in v.into_iter().enumerate() { if i != 0 { print!(" "); } print!("{}", e); } println!(""); } struct ContestPrinter { s: String, } impl ContestPrinter { fn new() -> ContestPrinter { ContestPrinter { s: String::new() } } fn print(&mut self, x: T) where T: std::fmt::Display, { self.s.push_str(format!("{}", x).as_str()); } fn println(&mut self, x: T) where T: std::fmt::Display, { self.s.push_str(format!("{}\n", x).as_str()); } } impl std::ops::Drop for ContestPrinter { fn drop(&mut self) { print!("{}", self.s); } } fn main() { let mut printer = ContestPrinter::new(); let n = readl!(i32); for i in 0..n { for j in 0..n-i { printer.print(n); } printer.println(""); } }