Compilare: main.cpp: In function 'size_t euro2(const ushort*, size_t, const bool (*)(ushort, ushort))': main.cpp:34:34: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 34 | if (pos + (1 << pow) < size && is_gt(vec[id], vec[vals[pos + (1 << pow)]]) ) { | ~~~~~~~~~~~~~~~~~^~~~~~ main.cpp:46:12: warning: variable 'answer' set but not used [-Wunused-but-set-variable] 46 | ushort answer[10005]; | ^~~~~~ main.cpp: In function 'int main()': main.cpp:89:69: warning: 'max_id' may be used uninitialized [-Wmaybe-uninitialized] 89 | out << euro2(reports, max_id, gt) + euro2(reports + max_id, N - max_id, lt); | ^~~~~~ main.cpp:75:24: note: 'max_id' was declared here 75 | ushort N, max = 0, max_id, reports[10000]; | ^~~~~~