#![allow(
    dead_code,
    non_snake_case,
    unused_imports,
    unused_mut,
    unused_variables,
    while_true,
    unused_assignments,
    clippy::needless_range_loop,
    clippy::ptr_arg,
    clippy::type_complexity,
    clippy::unnecessary_cast
)]
use proconio::{input, marker::Usize1 as usize1, marker::Usize1 as us1};
use std::collections::{BinaryHeap, HashMap, HashSet, VecDeque};

fn main() {
    input! {
      N: i32,
    };

    println!("{}", N * N);
}