fn main(){}

use std::{slice::Iter, cmp::{max, self}, mem::replace, collections::{HashSet, HashMap}, ops::Index, ascii::AsciiExt};
use rand::Rng;
use regex::Regex;
use md5;
use std::any::{Any, TypeId};

/*
sum_to_n is a function that sums numbers from 1 to n.
    
*/
fn sum_to_n(n: i32) -> i32 {


    n*(n+1)/2
}
