Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g1[k].size();i++) ^ user.cpp: In function ‘void apm()’: user.cpp:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf.size();i++) ^ user.cpp:30:12: warning: unused variable ‘w’ [-Wunused-variable] muchie w; ^ user.cpp: In function ‘int main()’: user.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<s.length();j++, p=p*5) ^ user.cpp:79:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ^