View Compilation Error

0_0_21715536_15937.cpp: In function 'void deal()':
0_0_21715536_15937.cpp:64:2: error: 'cin' was not declared in this scope
  cin >> n >> m;//读取n,m，地图长,宽 
  ^
0_0_21715536_15937.cpp:178:2: error: 'cout' was not declared in this scope
  cout << ans << endl;
  ^
0_0_21715536_15937.cpp:178:17: error: 'endl' was not declared in this scope
  cout << ans << endl;
                 ^
0_0_21715536_15937.cpp: In function 'int main()':
0_0_21715536_15937.cpp:183:2: error: 'cin' was not declared in this scope
  cin >> t;
  ^