import sys
from fx2.format import input_data, output_data


def normalize(input):
    output = []
    for (addr, chunk) in sorted(input):
        if output and output[-1][0] + len(output[-1][1]) == addr:
            output[-1] = (output[-1][0], output[-1][1] + chunk)
        else:
            output.append((addr, chunk))
    return output


data = input_data(open(sys.argv[1], "rb"))
data = normalize(data)
output_data(open(sys.argv[2], "wb"), data)