View Compilation Error

0_0_36222013_30461.cpp: In function 'int main()':
0_0_36222013_30461.cpp:58:3: error: 'ios' has not been declared
   ios::sync_with_stdio(false);
   ^
0_0_36222013_30461.cpp:59:2: error: 'cin' was not declared in this scope
  cin.tie(0);
  ^
0_0_36222013_30461.cpp:60:2: error: 'cout' was not declared in this scope
  cout.tie(0);
  ^
0_0_36222013_30461.cpp:72:17: error: 'sort' was not declared in this scope
   sort(a+1,a+n+1);
                 ^
0_0_36222013_30461.cpp:73:23: error: 'memset' was not declared in this scope
   memset(c,0,sizeof(c));
                       ^
0_0_36222013_30461.cpp:79:17: error: 'min' was not declared in this scope
    k=min(k,n-j-k)+1;
                 ^
0_0_36222013_30461.cpp:106:24: error: 'endl' was not declared in this scope
    cout<<"impossible"<<endl;
                        ^
0_0_36222013_30461.cpp:111:18: error: 'endl' was not declared in this scope
    cout<<ans[n]<<endl;
                  ^