Compilare: main.cpp: In function 'int main()': main.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < n; i++) ~~^~~ main.cpp:56:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = index - v.begin(); i < n; i++) ~~^~~