Merkkijonot

const readline = require('readline');
const r = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    terminal: false,
});

let data = '';
r.on('line', input => {
    data += input.toString() + '\n';

    const parsed = data.split('\n');
    const count = parseInt(parsed.shift());
    parsed.pop();

    if (parsed.length >= count) {
        calculate(parsed.map(a => a.trim()));
        r.close();
    }
});

function optimize(str) {
    let res = '';

    for(let strIndex = 0; strIndex < str.length; strIndex++) {
        for(let strOtherIndex = strIndex + 1; strOtherIndex < str.length; strOtherIndex++) {
            const [letter, otherLetter] = [str[strIndex], str[strOtherIndex]];
            res += letter === otherLetter ? '1' : '0';
        }
    }

    return res;
}

function calculate(input) {
    let matches = 0;

    input = input.map(optimize);
    let cur;
    while(cur = input.shift()) {
        for(const str of input) {
            if (cur === str) matches++;
        }
    }

    console.log(matches);
}

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

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: WRONG ANSWER

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

Test 9

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 10

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

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: WRONG ANSWER

Test 21

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 22

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 23

Group: 1, 2, 3

Verdict: ACCEPTED

Test 24

Group: 1, 2, 3

Verdict: WRONG ANSWER