3RD STAGE OF THE 11TH LATVIAN OLYMPIAD IN INFORMATICS

TEST cases and correct answers

1. “Series”

9109209 99887766 221015001

6

899 9022 2548

8

999988 1000013 80

2

3637 38394041 296027789

NAV

65 665 1768

0

7 666777 1815376

5

123456 87654321 560000000

1

176 77889900 364135087

3

111111111 999999999 812345679

9

7777777 88888888 523358031

2

 

2. “Sevens, twos and zeros”

177

777207

287

77777

6923

20007220772

7429

7027707707

27077

27077

80411

7022200720227

199999

270277207207207

390625

200000000

490283

72707777022027

499999

2020707070077777

3. “Ones”

3 10

2 0

35 36

3 4

215 6

3 4

2566 5433

0 1

77689 46656

6 6

10 387420489

0 18

536870911 124

30 0

612220031 96

11 15

999999995 8

4 1

429981695 429981696

31 16

4. “The magician

4 0 1 4

3 2

7 2 3 5

11 4

23 19 17 13

50 11

50 3 3 0

15 20

150 2 98 0

134 60

83 83 0 83

123 41

150 99 0 1

93 55

150 0 2 2

40 62

150 4 15 81

194 81

150 1 0 99

181 83


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