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Diffstat (limited to 'min_ops_make_int_zero.py')
-rw-r--r-- | min_ops_make_int_zero.py | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/min_ops_make_int_zero.py b/min_ops_make_int_zero.py new file mode 100644 index 0000000..096921a --- /dev/null +++ b/min_ops_make_int_zero.py @@ -0,0 +1,39 @@ +# 2749. Minimum Operations to Make the Integer Zero + +""" +you are given two integers 'nums1' and 'nums2'. in one operation you can +choose integer 'i' in the range '[0, 60]' and subtract '2^i + num2' from +'num1'. return the integer denoting the minimum number of operations needed +to make 'nums1' equal to 0. if it is impossible to make 'nums1' equal to 0, +return -1. +""" + + +class Solution(object): + def bit_cnt(self, num): + cnt = 0 + while num > 0: + cnt += num & 1 + num >>= 1 + return cnt + + def makeTheIntegerZero(self, num1, num2): + """ + :type num1: int + :type num2: int + :rtype: int + """ + if num1 < num2: + return -1 + for i in range(101): + diff = num1 - 1 * num2 * i + bits = self.bit_cnt(diff) + if bits <= i and i <= diff: + return i + return -1 + + +if __name__ == "__main__": + obj = Solution() + print(obj.makeTheIntegerZero(num1=3, num2=-2)) + print(obj.makeTheIntegerZero(num1=5, num2=7)) |