View Compilation Error

0_0_29271184_19509.cpp:7:9: error: 'll' does not name a type
  inline ll read()
         ^
0_0_29271184_19509.cpp: In function 'int main()':
0_0_29271184_19509.cpp:40:12: error: 'read' was not declared in this scope
   n = read(), m = read(), k = read();
            ^