Compilare: main.cpp: In function 'void plusUnu()': main.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size(); i ++) { ~~^~~~~~~~~~~~ main.cpp: In function 'void promenada(Trie*, int)': main.cpp:54:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < dp[nod->index].size(); j ++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:61:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = dp[nod->index].size(); j < ans.size(); j ++) { ~~^~~~~~~~~~~~