Compilare: user.cpp: In function ‘int find_value(long long int)’: user.cpp:34:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(it = 0;it < Hash[list].size();it++) ^ user.cpp: In function ‘void insert_value(long long int)’: user.cpp:43:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == Hash[list].size()) ^ user.cpp: In function ‘void read_solve()’: user.cpp:88:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol != Hash[cod%MOD].size()) ^ user.cpp:87:13: warning: unused variable ‘sz’ [-Wunused-variable] int sz = Hash[cod%MOD].size(); ^ user.cpp:82:18: warning: ‘root’ may be used uninitialized in this function [-Wmaybe-uninitialized] DFS(root); ^