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Ingy döt Net 2023-07-01 11:58:00 -04:00
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18
Task/Integer-overflow/Python/integer-overflow-1.py Normal file
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Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> for calc in ''' -(-2147483647-1)
2000000000 + 2000000000
-2147483647 - 2147483647
46341 * 46341
(-2147483647-1) / -1'''.split('\n'):
ans = eval(calc)
print('Expression: %r evaluates to %s of type %s'
% (calc.strip(), ans, type(ans)))
Expression: '-(-2147483647-1)' evaluates to 2147483648 of type <type 'long'>
Expression: '2000000000 + 2000000000' evaluates to 4000000000 of type <type 'long'>
Expression: '-2147483647 - 2147483647' evaluates to -4294967294 of type <type 'long'>
Expression: '46341 * 46341' evaluates to 2147488281 of type <type 'long'>
Expression: '(-2147483647-1) / -1' evaluates to 2147483648 of type <type 'long'>
>>>

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Task/Integer-overflow/Python/integer-overflow-2.py Normal file
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Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> for calc in ''' -(-2147483647-1)
2000000000 + 2000000000
-2147483647 - 2147483647
46341 * 46341
(-2147483647-1) / -1'''.split('\n'):
ans = eval(calc)
print('Expression: %r evaluates to %s of type %s'
% (calc.strip(), ans, type(ans)))
Expression: '-(-2147483647-1)' evaluates to 2147483648 of type <class 'int'>
Expression: '2000000000 + 2000000000' evaluates to 4000000000 of type <class 'int'>
Expression: '-2147483647 - 2147483647' evaluates to -4294967294 of type <class 'int'>
Expression: '46341 * 46341' evaluates to 2147488281 of type <class 'int'>
Expression: '(-2147483647-1) / -1' evaluates to 2147483648.0 of type <class 'float'>
>>>