Mã chấm: 14438

Main.cc: In function ‘long long int nttd(long long int, long long int)’:
Main.cc:10:16: error: ‘max’ was not declared in this scope
  for(ll i=1;i<=max(n,m);i++){
                ^~~
Main.cc:10:16: note: suggested alternative:
In file included from /usr/include/c++/7/algorithm:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_algo.h:3468:5: note:   ‘std::max’
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^~~