View Compilation Error

0_0_15480282_6541.cpp: In function 'int main()':
0_0_15480282_6541.cpp:6:2: error: 'ayacin' was not declared in this scope
  ayacin;
  ^
0_0_15480282_6541.cpp:7:2: error: 'cin' was not declared in this scope
  cin>>t;
  ^
0_0_15480282_6541.cpp:19:32: error: 'max' was not declared in this scope
      ans+=max(a[i][j]-a[x][y],0);
                                ^
0_0_15480282_6541.cpp:23:3: error: 'cout' was not declared in this scope
   cout<<ans<<endl;
   ^
0_0_15480282_6541.cpp:23:14: error: 'endl' was not declared in this scope
   cout<<ans<<endl;
              ^