View Compilation Error

0_0_30206554_19778.cpp:102:9: error: '::main' must return 'int'
 ll main()
         ^
0_0_30206554_19778.cpp: In function 'int main()':
0_0_30206554_19778.cpp:113:29: error: 'prllf' was not declared in this scope
             prllf("0 0.00\n");
                             ^
0_0_30206554_19778.cpp:135:28: error: 'prllf' was not declared in this scope
   prllf("%lld %.2lf\n",oo,k);
                            ^