Compilare: main.cpp: In function 'int main()': main.cpp:57:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:63:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); i++) ~~^~~~~~~~~~