Compilare: main.cpp: In function 'int elemComun(int, int)': main.cpp:17:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < flori[i].size() && y < flori[j].size()){ //pentru ca sunt sortati vectorii flori[i][] si flori[j][], voi aplica un algoritm ~~^~~~~~~~~~~~~~~~~ main.cpp:17:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < flori[i].size() && y < flori[j].size()){ //pentru ca sunt sortati vectorii flori[i][] si flori[j][], voi aplica un algoritm ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void adaug(int, int)': main.cpp:37:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int ct = 0; ct < flori[i].size(); ct++){ ~~~^~~~~~~~~~~~~~~~~ main.cpp:40:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int ct = 0; ct < flori[j].size(); ct++){ ~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:108:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < indici[i].size(); j++){ ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int elemComun(int, int)': main.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type] } ^