Compilare: user.cpp: In function ‘char find_max(int)’: user.cpp:40:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp: In function ‘void pushcd(int)’: user.cpp:65:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp:83:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp:85:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sz < sol[vecin].size()) sz = sol[vecin].size(); ^ user.cpp:90:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp:91:64: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(gr[vecin] > gr[nod] && sol[vecin].size() == sz) ^ user.cpp: In function ‘void DFS(int)’: user.cpp:115:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();++i) if(!viz[v[x][i]]) ^ user.cpp: In function ‘int main()’: user.cpp:156:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;++i) if(sol[i].size() > sz) ^