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Fibonacci_1
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| # Fibonacci | |
| def fab_1(n): | |
| n1 = 1 | |
| n2 = 1 | |
| n3 = 1 | |
| if n < 1: | |
| print ('Wrong input,try again!') | |
| return -1 | |
| while (n-2) > 0: | |
| n3 = n2 + n1 | |
| n1 = n2 | |
| n2 = n3 | |
| n -= 1 | |
| return n3 | |
| result = fab_1(34) | |
| if result != -1: | |
| print (result) |
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