Colidity-- Fish

#include <stack>
// you can write to stdout for debugging purposes, e.g.
// cout << "this is a debug message" << endl;

int solution(vector<int> &A, vector<int> &B) {
    // write your code in C++11
    stack<int> s;
    int res = 0;
    for(int i = 0 ; i < B.size() ; ++i)
    {
        if(B[i] == 0)
        {            
            while(!s.empty())
            {
                if(s.top() > A[i])
                {
                    break;
                }
                else
                {
                    s.pop();
                }
            }
            if(s.empty())
            {
                ++res;
            }
        }
        else
        {
            s.push(A[i]);
        }
    }
    res += s.size();
    return res;
}