#include
    $$
     class Solution {public:    int divide(int dividend, int divisor) {        long long int a=dividend,b=divisor;        int flag=((dividend>0) ^ (divisor>0))? -1:1;        a /= b;        a=a>0?a:-a;        a = a*flag;        if(a==2147483648)            return (1<<31)-1;        else return a;    }};