In file included from /usr/include/c++/10/cassert:44,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
from combo.cpp:2:
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:21:27: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
21 | assert(cur.size() == i-1);
| ~~~~~~~~~~~^~~~~~
combo.cpp:29:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
29 | assert(cur.size() == N);
| ~~~~~~~~~~~^~~~