Compilare: user.cpp: In function ‘int main()’: user.cpp:3:13: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] #define oo 1<<31-1 ^ user.cpp:11:29: note: in expansion of macro ‘oo’ for(i=1;i<=E;i++)sol[i]=oo; ^ user.cpp:3:13: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] #define oo 1<<31-1 ^ user.cpp:17:27: note: in expansion of macro ‘oo’ if(sol[j-eg]!=oo) ^ user.cpp:3:13: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] #define oo 1<<31-1 ^ user.cpp:27:16: note: in expansion of macro ‘oo’ if(sol[E]==oo)g<<"-1"<<'\n'; ^