You are given a string $$S$$ of length $$N$$. Each character of the string is either $$0$$ or $$1$$. Now, you need to select the largest substring in which the count of $$0$$ in the string is more than the count of $$1$$. Print the maximum possible length of the subarray in the output.
Input
The first line contains an integer $$N$$ as input.
The next line contains a string comprising of $$0$$ and $$1$$. The length of this string is exactly $$N$$.
Output
In the output print the length of the largest substring in which the count of $$0$$ is more than $$1$$.
Constraints
$$1 \le N \le 10^5$$
The last three characters i.e. $$100$$ forms a substring of length $$3$$ which is the largest substring possible in which $$0$$ are more than $$1$$.