Compilare: user.cpp: In function ‘bool inter(trio, trio)’: user.cpp:48:16: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(b.x<=a.x&&b.x>=a.x-a.l+1||a.x<=b.x&&a.x>=b.x-b.l+1) ^ user.cpp:50:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(b.y<=a.y&&b.y>=a.y-a.l+1||a.y<=b.y&&a.y>=b.y-b.l+1) ^ user.cpp: In function ‘int main()’: user.cpp:91:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<V.size();i++) ^