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Problems

Implementation
Difficulty
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957
Square root
959
Sum of digits
961
Four-digit without middle
962
The biggest party of the quadrilateral
Very easy
963
Permutation of the words
968
Distance between numbers
Hard
990
12345
1055
Numerical spiral
Medium
1111
Ackermann Function
Easy
1112
Queen, Rook and Knight
Easy
1117
Queen, rook and bishop
Very easy
1118
Watermelons
Very easy
1121
A^B mod C
Medium
1122
Rook, knight and bishop
Very easy
1125
The Angle
Easy
1129
Revision of the store
Easy
1136
Remakes
Easy
1143
Division by zero 2 or...
Easy
1161
Tennis
Medium
1162
Calls
Very easy
1164
Handbags
1166
Television
Easy
1168
Guitar
Very easy
1170
Divisors
Very easy
1171
Testing
Easy
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