143165576
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 210637432
 724264821
 1741
 619489590
 1199537418
 1075765759
 747976826
 638486017
 58438190
 1285316221
 186925426
 1180540990
 833393692
 1818960378
 2000000000
 0
 1309028227
 514714359
 624205168
 1795248373
 643201595
 1304312649

14 3 3 4 5 2 4 4 2 4 6 4 3 4 5 3 5 4 1 5 3 4 5 5 8
#!/usr/bin/env python3

def main():
    try:
        while True:
            s = input()
            if '4' in s:
                print(0)
            else:
                if '1' not in s:
                    print(1)
                elif '2' not in s:
                    print(2)
                elif '3' not in s:
                    print(3)
                else:
                    print(10)

    except EOFError:
        pass

main()
