View Compilation Error

0_0_39216713_14355.cpp: In function 'int main()':
0_0_39216713_14355.cpp:11:15: error: 'max' was not declared in this scope
   11 |            x1=max(x1,x3);
      |               ^~~
0_0_39216713_14355.cpp:13:15: error: 'min' was not declared in this scope; did you mean 'main'?
   13 |            x2=min(x2,x4);
      |               ^~~
      |               main