Compilare: user.cpp:9:34: warning: ‘typedef’ was ignored in this declaration [enabled by default] typedef struct str{int x; int nr;}; ^ user.cpp: In function ‘int main()’: user.cpp:37:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<h[j].size();k++) ^ user.cpp:51:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k<h[j].size()+5) ^ user.cpp:65:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<h[i].size();j++) ^