fn main() {
let n = get::val::<usize>();
let ks = get::list::<usize>();
let mut ans = vec![ks[0]];
for w in ks.windows(2) {
ans.push(std::cmp::min(w[0], w[1]))
}
ans.push(ks[n-2]);
put::vec(&ans, " ")
}
#[allow(dead_code)]
mod put {
use std::string::*;
pub fn vec<T: ToString>(vec: &Vec<T>, sep: &str) {
let out = vec.iter().map(|e| e.to_string()).collect::<Vec<_>>().as_slice().join(sep);
println!("{}", out);
}
pub fn mat<T: ToString>(mat: &Vec<Vec<T>>, sep: &str) {
for v in mat {
vec(v, sep);
}
}
}
#[allow(dead_code)]
mod get {
use std::io::*;
use std::str::*;
pub fn val<T: FromStr>() -> T {
let mut buf = String::new();
let s = stdin();
s.lock().read_line(&mut buf).ok();
buf.trim_right().parse::<T>().ok().unwrap()
}
pub fn vals<T: FromStr>(n: usize) -> Vec<T> {
let mut vec: Vec<T> = vec![];
for _ in 0 .. n {
vec.push(val());
}
vec
}
pub fn tuple<T1: FromStr, T2: FromStr>() -> (T1, T2) {
let mut buf = String::new();
let s = stdin();
s.lock().read_line(&mut buf).ok();
let mut it = buf.trim_right().split_whitespace();
let x = it.next().unwrap().parse::<T1>().ok().unwrap();
let y = it.next().unwrap().parse::<T2>().ok().unwrap();
(x, y)
}
pub fn tuples<T1: FromStr, T2: FromStr>(n: usize) -> Vec<(T1, T2)> {
let mut vec: Vec<(T1, T2)> = vec![];
for _ in 0 .. n {
vec.push(tuple());
}
vec
}
pub fn tuple3<T1: FromStr, T2: FromStr, T3: FromStr>() -> (T1, T2, T3) {
let mut buf = String::new();
let s = stdin();
s.lock().read_line(&mut buf).ok();
let mut it = buf.trim_right().split_whitespace();
let x = it.next().unwrap().parse::<T1>().ok().unwrap();
let y = it.next().unwrap().parse::<T2>().ok().unwrap();
let z = it.next().unwrap().parse::<T3>().ok().unwrap();
(x, y, z)
}
pub fn tuple3s<T1: FromStr, T2: FromStr, T3: FromStr>(n: usize) -> Vec<(T1, T2, T3)> {
let mut vec: Vec<(T1, T2, T3)> = vec![];
for _ in 0 .. n {
vec.push(tuple3());
}
vec
}
pub fn list<T: FromStr>() -> Vec<T> {
let mut buf = String::new();
let s = stdin();
s.lock().read_line(&mut buf).ok();
buf.trim_right().split_whitespace().map(|t| t.parse::<T>().ok().unwrap()).collect()
}
pub fn lists<T: FromStr>(h: usize) -> Vec<Vec<T>> {
let mut mat: Vec<Vec<T>> = vec![];
for _ in 0 .. h {
mat.push(list());
}
mat
}
pub fn chars() -> Vec<char> {
let mut buf = String::new();
let s = stdin();
s.lock().read_line(&mut buf).ok();
buf.trim_right().chars().collect()
}
}