Compilare: main.cpp: In function 'void euler(int)': main.cpp:16:21: warning: variable 'newn' set but not used [-Wunused-but-set-variable] int muchie, newn; ^~~~ main.cpp: In function 'int main()': main.cpp:63:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) { ~^~~~~~~~~~~~~~ main.cpp:89:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<r.size();j++) { ~^~~~~~~~~ main.cpp:36:52: warning: variable 'ok' set but not used [-Wunused-but-set-variable] int n, m, i, ct, newn, nod, j, muc, last, par, ok; ^~ main.cpp:36:41: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, m, i, ct, newn, nod, j, muc, last, par, ok; ^~~~