Compilare: main.cpp: In function 'int main()': main.cpp:15:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < n; i++) { ~~^~~ main.cpp:18:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + 1 == x) ~~~~~~^~~~ main.cpp:13:38: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized] unsigned long long m, s = 0, sx; ^~