0_0_20878184_20705.cpp:34:9: error: '::main' must return 'int' ll main(){ ^ 0_0_20878184_20705.cpp: In function 'int main()': 0_0_20878184_20705.cpp:48:22: error: 'prllf' was not declared in this scope if(k)prllf("%d\n",k); ^