View Compilation Error

0_0_29810133_14252.cpp: In function 'int main()':
0_0_29810133_14252.cpp:4:19: error: 'long long' invalid for 'a'
  long long double a,b;
                   ^
0_0_29810133_14252.cpp:4:21: error: 'long long' invalid for 'b'
  long long double a,b;
                     ^