Compilare: user.cpp: In function ‘void insert(Trie*, int)’: user.cpp:38:17: warning: unused variable ‘a’ [-Wunused-variable] int a = 0; ^ user.cpp: In function ‘void precalcDP(Trie*)’: user.cpp:66:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(DP[p].size() > Max) ^ user.cpp:74:13: warning: unused variable ‘a’ [-Wunused-variable] int a = 0; ^ user.cpp:57:9: warning: variable ‘PMax’ set but not used [-Wunused-but-set-variable] int PMax = 0, Max = 0; ^ user.cpp:78:9: warning: variable ‘limit’ set but not used [-Wunused-but-set-variable] int limit; ^