Compilare: user.cpp: In function ‘void SetUp()’: user.cpp:18:23: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> a[i] + 1; ^ user.cpp: In function ‘int minimal(int, int)’: user.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ In file included from /usr/include/string.h:642:0, from /usr/include/c++/4.8/cstring:42, from user.cpp:2: In function ‘void* memcpy(void*, const void*, size_t)’, inlined from ‘void DFS(int, int, int)’ at user.cpp:34:43: /usr/include/i386-linux-gnu/bits/string3.h:52:71: warning: call to void* __builtin___memcpy_chk(void*, const void*, unsigned int, unsigned int) will always overflow destination buffer [enabled by default] return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest)); ^