Peter Vivo Pengeszikra
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| import decimal | |
| # for reference, the first 100 digits of pi | |
| pi = decimal.Decimal('3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679') | |
| # Basic recursive factorial calculation. For large n switch to iterative. | |
| def fact(n): | |
| if n == 0: | |
| return 1 |