/in/foo.cc: In function 'int main()':
/in/foo.cc:43:27: error: invalid types 'int [40000][std::ios_base&(std::ios_base&)]' for array subscript
   if(data[base] +data[left] <add)
                           ^
/in/foo.cc:45:31: error: invalid types 'int [40000][std::ios_base&(std::ios_base&)]' for array subscript
    add = data[base] +data[left];
                               ^
/in/foo.cc:46:28: error: invalid conversion from 'std::ios_base& (*)(std::ios_base&)' to 'int' [-fpermissive]
    saveleft=base,saveright=left;
                            ^~~~