Compilare: main.cpp: In function 'void dfs(int)': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int p=0;p<g[nod].size();p++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void euler(int)': main.cpp:45:21: warning: unused variable 'fl' [-Wunused-variable] int fl=0; ^~ main.cpp: In function 'int main()': main.cpp:99:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<ciclu.size();i++) ~^~~~~~~~~~~~~