Compilare: main.cpp: In function 'void dfs(int)': main.cpp:15:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:17:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(v[vecin]==0) ^~ main.cpp:19:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(d[nod]<d[vecin]){ ^~ main.cpp: In function 'void solve(int)': main.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:12: warning: array subscript has type 'char' [-Wchar-subscripts] L[a].push_back(b); ^ main.cpp:61:12: warning: array subscript has type 'char' [-Wchar-subscripts] g[b]=1; ^ main.cpp:62:12: warning: array subscript has type 'char' [-Wchar-subscripts] f[a]=1, f[b]=1; ^ main.cpp:62:20: warning: array subscript has type 'char' [-Wchar-subscripts] f[a]=1, f[b]=1; ^