Compilare: user.cpp: In function ‘void Caut_Si_Afis(int)’: user.cpp:36:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Sol.size(); i++) ^ user.cpp:41:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < Sol[i].size(); j++) { ^ user.cpp: In function ‘int main()’: user.cpp:74:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Sol.size(); i++) { ^