Compilare: user.cpp: In function ‘int cauta(int, int)’: user.cpp:24:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<ha[tip][unde].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:53:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<x.size();++i) ^ user.cpp:55:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<y.size();++i) ^ user.cpp:68:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<x.size();++i) ^ user.cpp:69:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<y.size();++j) ^ user.cpp: In function ‘int cauta(int, int)’: user.cpp:27:1: warning: control reaches end of non-void function [-Wreturn-type] } ^