View Compilation Error

0_0_26157616_16145.cpp:56:20: error: '::main' must return 'int'
 long long main(void){
                    ^
0_0_26157616_16145.cpp: In function 'int main()':
0_0_26157616_16145.cpp:69:13: error: 'prlong' was not declared in this scope
             prlong longf("1\n");
             ^
0_0_26157616_16145.cpp:72:13: error: 'prlong' was not declared in this scope
             prlong longf("2\n");
             ^
0_0_26157616_16145.cpp:76:13: error: 'prlong' was not declared in this scope
             prlong longf("%d\n",ans);
             ^