Compilare: user.cpp: In function ‘int main()’: user.cpp:23:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (delta == 0 && w % 2 == 0 || delta > 0 && rad[delta] && (w + rad[delta]) % 2 == 0) { ^ user.cpp:25:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (sol1 > 0 && sol1 <= w || sol2 > 0 && sol2 <= w) ^