Problem 1087. Magic is simple (for beginners)

Solution 1708257

Submitted on 17 Jan 2019 by Serhii Tetora

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Test	Status	Code Input and Output
1	Pass	n = 3; y_correct = 15; assert(isequal(magic_sum(n),y_correct))
2	Pass	n = 5; y_correct = 65; assert(isequal(magic_sum(n),y_correct))
3	Pass	n = 7; y_correct = 175; assert(isequal(magic_sum(n),y_correct))
4	Pass	n = 8; y_correct = 260; assert(isequal(magic_sum(n),y_correct))
5	Pass	n = 20; y_correct = 4010; assert(isequal(magic_sum(n),y_correct))
6	Pass	n = 100; y_correct = 500050; assert(isequal(magic_sum(n),y_correct))
7	Pass	n = 200; y_correct = 4000100; assert(isequal(magic_sum(n),y_correct))
8	Pass	n = 1000; y_correct = 500000500; assert(isequal(magic_sum(n),y_correct))