Compilare: main.cpp: In function 'void dfs(int)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfst(int)': main.cpp:43:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<vt[nod].size(); i++) ~^~~~~~~~~~~~~~~ main.cpp:43:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=0; i<vt[nod].size(); i++) ^~~ main.cpp:46:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' ctc[nr].push_back(nod); ^~~ main.cpp: In function 'void afis()': main.cpp:68:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<pr.size(); i++) ~^~~~~~~~~~ main.cpp:67:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^ main.cpp: In function 'int main()': main.cpp:88:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<ctc[pr[i-1].second].size(); j++) ~^~~~~~~~~~~~~~~~~~~~~~~~~~~