Compilare: user.cpp: In function ‘void afis()’: user.cpp:15:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < trie.size(); i++) { ^ user.cpp:18:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < trie[i].size(); j++) { ^ user.cpp: In function ‘void adauga()’: user.cpp:33:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (k < trie[R].size() && poz <= n) { ^ user.cpp: In function ‘void sterge()’: user.cpp:70:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (k < trie[R].size() && poz <= n) { ^ user.cpp:87:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < trie[k].size(); i++) { ^ user.cpp: In function ‘void nrAparitii()’: user.cpp:99:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (k < trie[R].size() && poz <= n) { ^ user.cpp: In function ‘void lungimePrefix()’: user.cpp:113:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (k < trie[R].size() && poz <= n) { ^