import sys

def fdiff(s1, s2):
    if s1 == '-' or s2 == '-':
        return '    -'
    if s1 == 'N/A' or s2 == 'N/A':
        return '   N/A'
    t1 = float(s1)
    t2 = float(s2)
    return '%+6.1f' % (100. * (t1 - t2) / t2)

def pdiff(line1, line2):
    data1 = line1.split('\t', 3)
    if len(data1) <= 3: return False
    data2 = line2.split('\t', 3)
    if len(data2) <= 3: return False
    if data1[3] != data2[3]: return False
    print('%s\t%s\t%s' % (fdiff(data1[0], data2[0]), fdiff(data1[1], data2[1]), data1[3]))
    return True

fn1 = sys.argv[1]
fn2 = sys.argv[2]
f1 = open(fn1)
f2 = open(fn2)
test = None
for line1, line2 in zip(f1, f2):
    line1 = line1.rstrip()
    line2 = line2.rstrip()
    if test and '\t' in line1:
        if pdiff(line1, line2):
            continue
    if line1 == line2:
        print(line1)
        if line1.startswith('========'):
            test = True
    else:
        print('<<< ' + line1)
        print('>>> ' + line2)

f1.close()
f2.close()