Compilare: user.cpp: In function ‘void merges(long long unsigned int, long long unsigned int, long long unsigned int*)’: user.cpp:10:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j <= m || i <= dr) ^ user.cpp:13:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i > dr){ c[s++] = *(p + j++); continue; } ^ user.cpp: In function ‘int main()’: user.cpp:24:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (short i = 0; i < n; i++)f >> a[i]; ^