/*
topic:
Without the use of add, subtract, and calculates two integers.
Ideas:
You can not use addition, subtraction can only consider bit computing.
x = num1 ^ num2, compared to erase the results into bits.
y = num1 & num2, is only the result of the carry.
(Y << 1) & x, until a carry is not generated.
*/
#include<iostream>
#include<cstring>
#include<vector>
#include<algorithm>
#include<map>
using namespace std;
int Add(int num1, int num2)
{
int x = num1 ^ num2;
int y = num1 & num2;
while(y != 0){
int temp = x ^ (y << 1);
y = x & (y << 1);
x = temp;
}
return x;
}
int main () {
cout<<Add(5,17);
}