Compilare: user.cpp: In function ‘int greedy(int)’: user.cpp:10:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++){ ^ user.cpp:12:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(v[j+1]-v[i]<=val) ^ user.cpp:15:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(v[j+1]-v[i]<=val) ^ user.cpp: In function ‘int main()’: user.cpp:30:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(greedy(j+step)>k) ^