function funnyString(s: string): string {
    let i = 1
    let j = s.length - 2
    
    while (i < s.length && j > -1) {
        let leftVal = Math.abs(s[i -1].charCodeAt(0) - s[i].charCodeAt(0))
        let rightVal = Math.abs(s[j].charCodeAt(0) - s[j + 1].charCodeAt(0))
        
        if (leftVal !== rightVal) {
            return "Not Funny"
        } 
         
        i++
        j--
    }
    
    return "Funny"
}