use proconio::input;
use std::collections::HashMap;
use std::collections::BTreeSet;
fn main(){
    input!{
        mut n:usize,
    }
    if n==0{
        print!("{}",1);
    } else {
        let mut vec=vec!['0','1','0'];
        n-=1;
        let mut c=0;
        for i in (0..n){
            vec.push('0');
        }
        for i in vec{
            print!("{}",i);
        }
    }
    
}