Compilare: main.cpp: In function 'int main()': main.cpp:27:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < a[i].size(); ++j) { ~~^~~~~~~~~~~~~ main.cpp:29:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (a[i][j] == '1' && ln[aux-j+OFFS] > a[i].size()) { ~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:30:23: warning: narrowing conversion of 'a[i].std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size<char, std::char_traits<char>, std::allocator<char> >()' from 'std::__cxx11::basic_string<char>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] pq.push({a[i].size(), aux-j+OFFS}); ~~~~~~~~~^~ main.cpp:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ln[aux] > x + a[i].size()) { ~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:51:16: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)x) + a[i].std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size<char, std::char_traits<char>, std::allocator<char> >())' from 'std::__cxx11::basic_string<char>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] pq.push({x + a[i].size(), aux}); ~~^~~~~~~~~~~~~ main.cpp:54:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ln[y+a[i].size()] > x + a[i].size()) { ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:55:16: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)x) + a[i].std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size<char, std::char_traits<char>, std::allocator<char> >())' from 'std::__cxx11::basic_string<char>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] pq.push({x + a[i].size(), y + a[i].size()}); ~~^~~~~~~~~~~~~ main.cpp:55:33: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)y) + a[i].std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size<char, std::char_traits<char>, std::allocator<char> >())' from 'std::__cxx11::basic_string<char>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] pq.push({x + a[i].size(), y + a[i].size()}); ~~^~~~~~~~~~~~~