Batman and Robin are on a mission. Their is a bomb which they want to diffuse but the problem is they have to solve a task first which is very difficult for

As you are their friend, they ask you to solve the problem for them.

You are given a pair (A, B). After each operation pair (A, B) gets changed to (B-2A, 28 +A).

You are given the initial value of A and B you have to find and return the value of pair after the operation

output ans as mod 10^9 + 7

pls solve this ques i am getting error in one of the test case

my solution is-:

#include

#include

#include

using namespace std;

int main()

{

int a,b,c;

cin>>a>>b>>c;

int d,h;

int d1;

int d2;

```
int mod = pow(10,9) + 7;
for(int i=0;i<c;i++)
{
d = a;
h = b;
d1 = 2*d;
d2 = 2*h;
a = h % mod - (d1 % mod);
b = (d2 % mod) + d % mod;
}
cout<<a<<" "<<b;
return 0;
```

}