Compilare: main.cpp: In function 'int main()': main.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=n;i++){ ~^~~ main.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=ne;i++){ ~^~~~ main.cpp:39:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=n-ne;i++){ ~^~~~~~