Compilare: main.cpp: In function 'int main()': main.cpp:35:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= grAB.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = ind; i < grAB.size(); i++) ~~^~~~~~~~~~~~~ main.cpp:61:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (poz0+1 < gr0.size()) v1 = gr0[poz0+1]; ~~~~~~~^~~~~~~~~~~~ main.cpp:62:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pozA+1 < grA.size()) v2 = grA[pozA+1]; ~~~~~~~^~~~~~~~~~~~ main.cpp:63:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pozB+1 < grB.size()) v3 = grB[pozB+1]; ~~~~~~~^~~~~~~~~~~~