View Compilation Error

0_0_12012828_20149.cpp:4: error: `LL' does not name a type
0_0_12012828_20149.cpp: In function `int main()':
0_0_12012828_20149.cpp:7: error: `a' undeclared (first use this function)
0_0_12012828_20149.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12012828_20149.cpp:7: error: `b' undeclared (first use this function)