Compilare: main.cpp: In function 'bool identic(std::vector<unsigned int>)': main.cpp:10:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < p.size(); i++) ~~^~~~~~~~~~ main.cpp:12:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[i] != i) main.cpp: In function 'int main()': main.cpp:36:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < n; i++) ~~^~~