黑暗爆炸OJ
DARKBZOJ
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Description
Write a program to calculate integer square roots.
Input
The input is read from a text file named squint.in. Its only line consists of an
integer 0 < = n < 2^63 .
Output
Its only line consists of the
smallest nonnegative integer q such that q^2 >= n .
Sample Input
122333444455555Sample Output
11060446
Hint
sqrt(122333444455555)=11060445.038765619 .Source
