hitsumabushi hitsumabushi
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| ans = 0 | |
| arr = """37107287533902102798797998220837590246510135740250 | |
| 46376937677490009712648124896970078050417018260538 | |
| 74324986199524741059474233309513058123726617309629 | |
| 91942213363574161572522430563301811072406154908250 | |
| 23067588207539346171171980310421047513778063246676 | |
| 89261670696623633820136378418383684178734361726757 | |
| 28112879812849979408065481931592621691275889832738 | |
| 44274228917432520321923589422876796487670272189318 | |
| 47451445736001306439091167216856844588711603153276 |
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| #/usr/bin/python | |
| import math | |
| def is_prime(x): | |
| if x < 0: | |
| x = -x | |
| if x < 2: | |
| return False | |
| # check the case: x=2,3 | |
| if x % 2 == 0: |
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