Compilare: user.cpp: In function ‘int main()’: user.cpp:67:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(next < ans.size()){ ^ user.cpp:69:37: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(M[*it].x != ans[next] && M[*it].y != ans[next] || viz[*it]){ ^ user.cpp:14:9: warning: variable ‘n’ set but not used [-Wunused-but-set-variable] int n, m, i, nr, nod, e, to, x, y, curent, next; ^