The 10th LATVIAN OLYMPIAD IN INFORMATICS

National competition
Tests and correct answers

1. "THE VALUE OF AN EXPRESSION"

Tests
Correct answers
Points
88888888 520 1
1
987654321 987654320 NEVAR
1
1234 1234 0
2
25 73 3
2
999999999 737 8
2
12345678 215 NEVAR
2
100 161 35
2
64 7 NEVAR
2
16 168 43
3
631 168 61
3



2. "THE FOLDED SHEET"

Tests
Correct answers
Points
5 999 3 3 2997.000000
2
572 572 572 0 163592.000000
2
1000 1 775 774 999.500000
2
99 33 55 44 2359.500000
2
120 50 80 55 4437.500000
2
200 1000 8 106 143268.004780
2
123 1000 114 62 88004.223420
2
1000 107 500 501 55880.815426
2
499 499 31 477 130944.051470
2
1000 7 998 2 5256.913906
2

 

3. "THE STRANGE SEQUENCE"

Tests
Correct answers
Points
19 2 49
1
12 6 75
1
11 255 81014
2
13 504 999919
2
18 1777 4097799
2
15 999 10077999
2
2 9256 19909091
2
3 9876 98018022
2
6 6316 699999999
3
1 9539 999999985
3

 

  4. "CUTTING OUT OF FACTORIALS"

Tests
Correct answers Points
5
2 5
2
7
2 3 7 vai 2 4 7
2
19
7 19
2
27
11 24 vai 11 25
2
87
2 43 87
2
98
50
2
240
120 vai 121
2
363
3 179 359 vai 4 179 359 vai 5 180 359 vai 3 181 362 vai 4 181 362 vai 2 181 363
2
482
242
2
497
248 497
2


Problems

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