function partyTime(strArr) {
    let list = {
        vip: [],
        regular: []
    }
    let name = strArr.shift()
    while (name !== 'PARTY') {
        let char = name[0]
        if (isNaN(char)) {
            list.regular.push(name)
        } else {
            list.vip.push(name)
        }
        name = strArr.shift()
    }
    strArr.forEach(guest => {
        if (list.vip.includes(guest)) {
            let index = list.vip.indexOf(guest)
            list.vip.splice(index, 1)
        } else if (list.regular.includes(guest)) {
            let index = list.regular.indexOf(guest)
            list.regular.splice(index, 1)
        }
    })
    console.log(list.vip.length + list.regular.length)
    console.log(`${list.vip.join('\n')}\n${list.regular.join('\n')}`)
}