View Compilation Error

0_0_34424851_26391.cpp:6:22: error: expected unqualified-id before numeric constant
 typedef long long ll;3
                      ^
0_0_34424851_26391.cpp: In function 'int main()':
0_0_34424851_26391.cpp:19:21: error: 'a' was not declared in this scope
         scanf("%s",&a);
                     ^