Compilare: main.cpp: In lambda function: main.cpp:18:21: warning: comparison of integer expressions of different signedness: 'int' and 'uint' {aka 'unsigned int'} [-Wsign-compare] 18 | for (int i = 1; i <= n; ++i) { | ~~^~~~ main.cpp:20:22: warning: comparison of integer expressions of different signedness: 'int' and 'uint' {aka 'unsigned int'} [-Wsign-compare] 20 | for (int j = 0; j < k && ok; ++j) | ~~^~~ main.cpp:21:15: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<unsigned int>, unsigned int>::value_type' {aka 'unsigned int'} and 'int' [-Wsign-compare] 21 | if (st[j] == i)