View Compilation Error

0_0_30102180_30213.cpp:39:9: error: '::main' must return 'int'
 ll main(){
         ^
0_0_30102180_30213.cpp: In function 'int main()':
0_0_30102180_30213.cpp:78:34: error: 'prllf' was not declared in this scope
             prllf("%lld\n",ans[i]);
                                  ^