with open('meshes.txt', 'r') as file:
    lines = [line.split() for line in file.readlines()]

with open('meshes_table.txt', 'w') as file:
    lines = lines[1:]
    lines.append([' ', ' ', ' ', '0'])
    lines1 = lines[:len(lines)//2]
    lines2 = lines[len(lines)//2:]
    for line1, line2 in zip(lines1, lines2):
        file.write(line1[0]+'x'+line1[0]+ ' & '+ line1[1]+ ' & '+ str(round(float(line1[3]), 13)) + ' & '
                   +line2[0]+'x'+line2[0]+ ' & '+ line2[1]+ ' & '+ str(round(float(line2[3]), 13))+' \\\ \n')