View Compilation Error

0_0_28040425_25831.cpp: In function 'int main()':
0_0_28040425_25831.cpp:45:28: error: 'llans' was not declared in this scope
         scanf("%lld", &n); llans = 0; 
                            ^
0_0_28040425_25831.cpp:48:11: error: 'ans' was not declared in this scope
           ans += (n / l) * (sum(r) - sum(l - 1)); 
           ^
0_0_28040425_25831.cpp:50:26: error: 'ans' was not declared in this scope
         printf("%lld\n", ans); 
                          ^