Compilare: user.cpp: In function ‘void rm()’: user.cpp:13:9: warning: unused variable ‘h’ [-Wunused-variable] int h=1,k=1,y=1; ^ user.cpp: In function ‘void df(int)’: user.cpp:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp: In function ‘void dfs(int, int)’: user.cpp:91:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<query[nod].size();i++) ~^~~~~~~~~~~~~~~~~~ user.cpp:100:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<qq[nod].size();i++) ~^~~~~~~~~~~~~~~ user.cpp:108:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<z[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp:116:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp:116:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i=0;i<g[nod].size();i++) ^~~ user.cpp:118:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ pz=c; ^~