delete pics to save space

history_source/信息学奥赛一本通/2.9.1.3.cpp

@@ -0,0 +1,24 @@
+#include<stdio.h>
+#include<string.h>
+using namespace std;
+int q,h[1005],s[1005],n[1005],ans=0,maxx=0,i,j,b,m;
+int main()
+{
+	scanf("%d",&q);
+	for(i=1;i<=q;i++) scanf("%d",h+i);
+	for(i=1;i<=q;i++) s[i]=1;
+	for(i=1;i<=q;i++)
+	{
+		for(j=1;j<=i;j++) if(h[j]<h[i]) s[i]=s[i]>s[j]+1?s[i]:s[j]+1;
+		b=0;
+		memset(n,0,sizeof(n));
+		for(j=i;j<=q;j++)
+		{
+			for(m=i;m<=j;m++) if(h[m]>h[j]) n[j]=n[j]>n[m]+1?n[j]:n[m]+1;
+			b=b>n[j]?b:n[j];
+		}
+		ans=ans>s[i]+b?ans:s[i]+b;
+	}
+	printf("%d\n",ans);
+	return 0;
+}