/in/foo.cc: In function 'int max(int)':
/in/foo.cc:22:19: error: 'a' was not declared in this scope
         a1[n-2] = a[n-2] * a[n-1] + 1;
                   ^
/in/foo.cc:25:12: error: 'a' was not declared in this scope
     return a[0] * a[1] + 1;
            ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:52:13: error: expected '}' at end of input
     return 0;
             ^