#include #include #include #include #include #define mod 1000000007 using namespace std; unsigned long long int power(unsigned long long int x, unsigned long long int y) { unsigned long long int res = 1; // Initialize result x = x % mod; // Update x if it is more than or // equal to p while (y > 0) { // If y is odd, multiply x with result if (y & 1) res = (res*x) % mod; // y must be even now y = y>>1; // y = y/2 x = (x*x) % mod; } return res; } int main() { unsigned long long int a,b,t,cells; cin>>a>>b>>t; unsigned long long int res=(power((a+b)/2,t)); cout<