Compilare: main.cpp: In function 'int main()': main.cpp:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~ main.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~ main.cpp:26:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[j] > v[i] && ultim[v[j]] == j) ~~~~~~~~~~~~^~~~