Problem 509. Count photos

Solution 859007

Submitted on 30 Mar 2016 by Marvin Schmidt
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Test Suite

Test Status Code Input and Output
1   Pass
x = 10; y_correct = 45; assert(isequal(photos(x),y_correct))

2   Pass
x = 100; y_correct = 4950; assert(isequal(photos(x),y_correct))

3   Pass
x = 1000; y_correct = 499500; assert(isequal(photos(x),y_correct))

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