Compilare: main.cpp: In function 'void sterge(unsigned int, unsigned int&)': main.cpp:39:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned int i=0;i<lung;i++) ~^~~~~ main.cpp: In function 'long long int solve(int)': main.cpp:63:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ~^~~ main.cpp:66:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(k>val) ~^~~~