Compilare: main.cpp: In function 'void createGrafCuplaj()': main.cpp:29:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (gr[i].size() == R) { ~~~~~~~~~~~~~^~~~ main.cpp: In function 'void cuplaj()': main.cpp:63:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < grCup.size(); ++i) { ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:76:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < grCup.size(); ++i) { ~~^~~~~~~~~~~~~~ main.cpp:87:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < grCup.size(); ++i) { ~~^~~~~~~~~~~~~~