View Compilation Error

0_0_35965626_25596.cpp: In function 'void tengxun_anpaijiqi()':
0_0_35965626_25596.cpp:26:25: error: 'scanf' was not declared in this scope
     scanf("%d%d", &n, &m);   //输入机器数量和任务数量
                         ^
0_0_35965626_25596.cpp:27:5: error: 'vector' was not declared in this scope
     vector<T_L> machine(n);
     ^
0_0_35965626_25596.cpp:27:15: error: expected primary-expression before '>' token
     vector<T_L> machine(n);
               ^
0_0_35965626_25596.cpp:27:26: error: 'machine' was not declared in this scope
     vector<T_L> machine(n);
                          ^
0_0_35965626_25596.cpp:28:15: error: expected primary-expression before '>' token
     vector<T_L> task(m);
               ^
0_0_35965626_25596.cpp:28:23: error: 'task' was not declared in this scope
     vector<T_L> task(m);
                       ^
0_0_35965626_25596.cpp:37:55: error: 'sort' was not declared in this scope
     sort(machine.begin(), machine.end(), mygreator_r());
                                                       ^
0_0_35965626_25596.cpp:64:35: error: 'printf' was not declared in this scope
     printf("%d %d\n", count,result);
                                   ^