delete pics to save space

history_source/信息学奥赛一本通/2.3.6.cpp

@@ -0,0 +1,20 @@
+#include<cstdio> 
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	if(n<=2){
+		printf("%d\n",n);
+		return 0;
+	}
+	int a=1,b=2,c;
+	for(int i=3;i<=n;i++)
+	{
+		c=a+b;
+		a=b;
+		b=c;
+	}
+	printf("%d\n",c);
+	return 0;
+}
+