Compilare: user.cpp:4:15: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] #define NMAX 1<<20 + 5 ^ user.cpp:11:12: note: in expansion of macro ‘NMAX’ unsigned a[NMAX], n, L, U; ^ user.cpp: In function ‘long long int NrSecvente(int)’: user.cpp:20:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 1; j <= n; ++j) ^ user.cpp:23:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(M.size() > k) ^ user.cpp: In function ‘int main()’: user.cpp:39:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= n; ++i) ^