Compilare: user.cpp: In function ‘void solve()’: user.cpp:134:9: warning: unused variable ‘x’ [-Wunused-variable] int x=n; ^ user.cpp: In function ‘bool compar(int)’: user.cpp:83:20: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=ans[i]; i>=1; i--) ^ user.cpp: In function ‘void scadere(int)’: user.cpp:83:20: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:83:13: note: ‘i’ was declared here for(int i=ans[i]; i>=1; i--) ^