#!/usr/bin/env python3
import sys

l = [int(line.strip()) for line in open(sys.argv[1])]
if len(l) != 3500:
    print("result contained %d lines, not the expected 3500 lines!" % (len(l)))
    raise SystemExit(1) # failure

lineno = 1

got_reset = 0
expected = 1
for i in l:
    if i == 1:
        if expected != 1: got_reset = 1
        expected = i + 1
        lineno = lineno + 1
        continue

    if i != expected:
        if expected == 1: 
            print("line %d: got %d, expected %d" % (lineno, i, expected))
        else:
            print("line %d: got %d, expected %d or 1" % (lineno, i, expected))
        raise SystemExit(1) # failure

    expected = i + 1
    lineno = lineno + 1

if got_reset:
    raise SystemExit(0) # success

print("no reset in %d lines!" % (lineno-1))
raise SystemExit(1) # failure