View Compilation Error

0_0_18066744_19715.cpp:44:9: error: '::main' must return 'int'
 ll main(){
         ^
0_0_18066744_19715.cpp: In function 'int main()':
0_0_18066744_19715.cpp:68:52: error: 'prllf' was not declared in this scope
         for (ll i=1; i<=n; i++) prllf("%d ", ans[i]);
                                                    ^
0_0_18066744_19715.cpp:69:19: error: 'prllf' was not declared in this scope
         prllf("\n");
                   ^