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4 lines
232 B
Python
4 lines
232 B
Python
a = input().split()
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print('%.6lf' % (((int(a[2]) + int(a[1])) * int(a[0]) / (int(a[2]) + 3 * int(a[1]))) / int(a[2]) +
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(int(a[0]) - ((int(a[2]) + int(a[1])) * int(a[0]) / (int(a[2]) + 3 * int(a[1])))) / int(a[1])))
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