Compilare: user.cpp: In function ‘void arb()’: user.cpp:44:19: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(i==n || p<=u && qq[1][p]->v<qq[0][i]->v)s=qq[1][p++]; else ^ user.cpp:46:19: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(i==n || p<=u && qq[1][p]->v<qq[0][i]->v)d=qq[1][p++]; else ^ user.cpp:41:15: warning: unused variable ‘deb’ [-Wunused-variable] int p, u, i, deb=0; ^