/in/foo.cc: In function 'int main()':
/in/foo.cc:20:15: error: invalid types 'int[int]' for array subscript
         minv[1]=a[1];
               ^
/in/foo.cc:22:39: error: invalid types 'int[int]' for array subscript
          L[i]=max(L[i-1],a[i]-minv[i-1]);
                                       ^
/in/foo.cc:23:10: error: invalid types 'int[int]' for array subscript
    minv[i]=min(minv[i],a[i]); 
          ^
/in/foo.cc:23:22: error: invalid types 'int[int]' for array subscript
    minv[i]=min(minv[i],a[i]); 
                      ^
/in/foo.cc:26:9: error: 'Ans' was not declared in this scope
         Ans=0;
         ^~~
/in/foo.cc:27:14: error: 'i' was not declared in this scope
         maxv[i]=a[n];
              ^
/in/foo.cc:29:35: error: invalid types 'int[int]' for array subscript
          Ans=max(Ans,L[i]+maxv[i+1]-a[i]);
                                   ^
/in/foo.cc:30:14: error: invalid types 'int[int]' for array subscript
        maxv[i]=max(maxv[i],a[i]); 
              ^
/in/foo.cc:30:26: error: invalid types 'int[int]' for array subscript
        maxv[i]=max(maxv[i],a[i]); 
                          ^