View Compilation Error

0_0_32125318_11037.cpp: In function 'int main()':
0_0_32125318_11037.cpp:4:8: error: 'cin' was not declared in this scope
  while(cin>>n>>m)
        ^
0_0_32125318_11037.cpp:11:14: error: 'cout' was not declared in this scope
   if(t&&m<a){cout<<m<<' ';t--;}
              ^
0_0_32125318_11037.cpp:12:3: error: 'cout' was not declared in this scope
   cout<<a;
   ^
0_0_32125318_11037.cpp:16:2: error: 'cout' was not declared in this scope
  cout<<endl;
  ^
0_0_32125318_11037.cpp:16:8: error: 'endl' was not declared in this scope
  cout<<endl;
        ^