Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v[nod].size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp:15:12: warning: unused variable 'vecin' [-Wunused-variable] int i, vecin, ii = 0; ^~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:39:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ii = 0; ii < w[i].size(); ii++){ ~~~^~~~~~~~~~~~~ main.cpp:73:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p[ii] < s[ii].size() && poz[ s[ii][ p[ii] ] ] <= poz[x]){ ~~~~~~^~~~~~~~~~~~~~ main.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[ii] != s[ii].size() ){ ~~~~~~^~~~~~~~~~~~~~~