View Compilation Error

0_0_14536991_22270.cpp: In function 'int main()':
0_0_14536991_22270.cpp:39:2: error: 'cin' was not declared in this scope
  cin.sync_with_stdio(false);
  ^
0_0_14536991_22270.cpp:41:5: error: 'cout' was not declared in this scope
     cout.tie(0);
     ^