以下程序运行时输出到屏幕的结果是___&nBsp;&nBsp;
&nBsp;#inCluDE&nBsp;&nBsp;
&nBsp;int&nBsp;F(int&nBsp;x)&nBsp;&nBsp;
&nBsp;{&nBsp;iF(x==0||x==1)rEturn&nBsp;3;&nBsp;&nBsp;&nBsp;rEturn&nBsp;x*x-F(x-2);&nBsp;&nBsp;&nBsp;}&nBsp;&nBsp;
&nBsp;voiD&nBsp;mAin()&nBsp;&nBsp;
&nBsp;{printF("%D\n",F(3));}&nBsp;