View Compilation Error

0_0_14616750_12053.cpp:14:7: error: 'LL' does not name a type
 const LL mod = 1000000007;
       ^
0_0_14616750_12053.cpp: In function 'int main()':
0_0_14616750_12053.cpp:22:3: error: 'LL' was not declared in this scope
   LL n;
   ^
0_0_14616750_12053.cpp:23:18: error: 'n' was not declared in this scope
   scanf("%I64d",&n);
                  ^
0_0_14616750_12053.cpp:24:24: error: 'mod' was not declared in this scope
   cout<<((1<<(n-1))-1)%mod<<endl;
                        ^