Merkkijonot

const readLine = require('readline')

const read = readLine.createInterface({
    input: process.stdin,
    output: process.stdout,
    terminal: false
})

const symbols = [ 
'A','B','C','D','E','F','G','H','I','J','K','L','M',
'N','O','P','Q','R','S','T','U','V','W','X','Y','Z' 
]

let bitArr = []

let help
let number = 1.1

const mkBitArr = arr => {
    arr.forEach(str => {
        symbols.forEach(symbol => {
            help = str.split(symbol).length - 1
            if(help > 1) {
            str = str.replace(new RegExp(symbol, 'g'), String(number))
            number += 0.1
            }
        })
        str = str.replace(/[a-z]/gi, "0")
        bitArr.push(str)
        number = 1.1
    })
}

const start = arr => {
    mkBitArr(arr)
    let count = 0
    for(let a = 0; a < bitArr.length; a++) 
        for(let b = a + 1; b < bitArr.length; b++) {
            if(bitArr[a] == bitArr[b]) {
                count++
            }
        }
        
    console.log(count)

}

let input = []
let started = false
let count
read.on('line', n => { 
    if(!started) {
        count = Number(n)
        started = true
    }
    else {
        input.push(n)
    }

    if(input.length == count) {
        start(input)
    }
})

Test 1

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 2

Group: 2, 3

Verdict: WRONG ANSWER

Test 3

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 4

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 5

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: WRONG ANSWER

Test 11

Group: 2, 3

Verdict: WRONG ANSWER

Test 12

Group: 2, 3

Verdict: ACCEPTED

Test 13

Group: 2, 3

Verdict: ACCEPTED

Test 14

Group: 2, 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 16

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 17

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 18

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 19

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 20

Group: 1, 2, 3

Verdict: ACCEPTED

Test 21

Group: 1, 2, 3

Verdict: ACCEPTED

Test 22

Group: 1, 2, 3

Verdict: ACCEPTED

Test 23

Group: 1, 2, 3

Verdict: ACCEPTED

Test 24

Group: 1, 2, 3

Verdict: ACCEPTED