Company: Fractal
Difficulty: medium
Hachinnan and Gifts body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; } .problem-container { max-width: 800px; margin: 0 auto; padding: 20px; border: 1px solid #ccc; border-radius: 8px; background-color: #f9f9f9; } h1, h2, h3 { color: #333; } .problem-description, .input-format, .output-format, .constraints, .examples { margin-bottom: 20px; } .example { background-color: #fff; padding: 15px; border: 1px solid #ddd; border-radius: 5px; margin-bottom: 15px; } pre { background-color: #f4f4f4; padding: 10px; border: 1px solid #ddd; border-radius: 5px; overflow-x: auto; } .explanation { margin-top: 10px; color: #555; } Hachinnan and Gifts Hachinnan loves gifts. He has n number of gifts with him and three arrays named A , B , and C , respectively, whose i-th element corresponds with the i-th gift. The surprise value of a gift is defined by the function: f(A, B, C, i) = A[i] + B[i] + C[i] * i Hachinnan wants to reorder the gifts so that their indexes change and the surpri