Compilare: main.cpp: In function 'int main()': main.cpp:45:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i + 1 < par.size(); i++) ~~~~~~^~~~~~~~~~~~ main.cpp:48:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i + 1 < impar.size(); i++) ~~~~~~^~~~~~~~~~~~~~