Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v2[x].size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:63:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v2[x].size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'void solve(int, int, int*, int*, char*)': main.cpp:86:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:125:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp:143:9: warning: unused variable 'maxim' [-Wunused-variable] int maxim=0; ^~~~~