Compilare: user.cpp: In function ‘void update(int)’: user.cpp:34:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<q[x].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:53:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<x.size();++i){ ^ user.cpp: In function ‘int caut(int, int, int&)’: user.cpp:30:18: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] return rez + 1; ^ user.cpp: In function ‘int main()’: user.cpp:30:18: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:19:9: note: ‘rez’ was declared here int rez; ^