View Compilation Error

0_0_35534620_29044.cpp:65:16: error: '::main' must return 'int'
 long long main(){
                ^
0_0_35534620_29044.cpp: In function 'int main()':
0_0_35534620_29044.cpp:83:9: error: 'prlong' was not declared in this scope
         prlong longf("Case %d: %d\n", T ++, ans);
         ^