Still I haven't lernt the bit operations, so I tried to realize it with iterations. It passed 12/13 tests except of that (a = 2147483647,b = -2147483648,Output: 2147483647, Expected: -1)

```
public int getSum(int a, int b) {
int sum = 0;
for(int i = 0; i < Math.abs(a); i++) {
if(a < 0)
sum--;
if(a > 0)
sum++;
}
for(int j = 0; j < Math.abs(b); j++) {
if(b < 0)
sum--;
if(b > 0)
sum++;
}
return sum;
```

`}`