Compilare: main.cpp: In function 'void dfs(int)': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int calc(int, int, int)': main.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod1].size();i++) ~^~~~~~~~~~~~~~~ main.cpp:55:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod3].size();i++) ~^~~~~~~~~~~~~~~ main.cpp:65:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod5].size();i++) ~^~~~~~~~~~~~~~~ main.cpp:73:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[1].size();i++) ~^~~~~~~~~~~~