0_0_27824621_20224.cpp: In function 'int main()': 0_0_27824621_20224.cpp:6:19: error: 'long long' invalid for 'a' double long long a,b; ^ 0_0_27824621_20224.cpp:6:21: error: 'long long' invalid for 'b' double long long a,b; ^