Compilare: user.cpp: In function ‘void make(int, int, int)’: user.cpp:11:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<b[fiu].size();i++) ^ user.cpp: In function ‘void df(int)’: user.cpp:37:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[nod].size();i++) ^ user.cpp:41:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<b[fiu].size();j++) ^ user.cpp:43:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+1>b[nod].size()-1)b[nod].push_back(v[nod]); ^ user.cpp:46:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j>b[nod].size()-1)b[nod].push_back(b[fiu][j]); ^ user.cpp:50:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<c[fiu].size();j++) ^ user.cpp:52:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+1>c[nod].size()-1)c[nod].push_back(v[nod]); ^ user.cpp:56:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j>c[nod].size()-1)c[nod].push_back(c[fiu][j]); ^ user.cpp:64:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[nod].size();i++) ^ user.cpp:68:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<a[nod].size();j++) ^