View Compilation Error

0_0_16983174_29311.cpp: In function 'int main()':
0_0_16983174_29311.cpp:27:19: error: 'll' was not declared in this scope
             ans+=(ll)(n/i)*(m/i)*(g[last]-g[i-1]);
                   ^
0_0_16983174_29311.cpp:29:26: error: 'll' was not declared in this scope
         printf("%lld\n",(ll)n*m-ans);
                          ^