#!/usr/bin/env python3

def tabulate(table, cols):
    formatter = "".join(["r"] * cols)
    print("$$\n\\begin{array}{", formatter, "}\n", end="", sep="")
    i = 0
    while i < len(table):
        for c in range(0, cols):
            amper = "& " if c > 0 else ""
            print(amper, table[i], ", ", end="", sep="")
            i += 1
            if i >= len(table):
                break;
        print("  \\\\\\\\")
    print("\\end{array}\n$$\n")

import re
import sys

if __name__ == '__main__':
    numbers = []
    for line in sys.stdin:
        line = line.rstrip()
        line = re.sub(r'.*\[', "", line)
        line = re.sub(r'\].*', "", line)
        if not re.search(r'\S', line):
            continue
        ns = [ int(i) for i in re.split(r',\s*', line) if len(i) > 0 ]
        numbers += ns
    tabulate(numbers, 7);
