delete pics to save space

1.1439.cpp

@@ -0,0 +1,28 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std; 
+const int maxn=100005;
+const int oo=1e9+7;
+int n,x;
+int idx[maxn],dp[maxn];
+int main()
+{
+	scanf("%d",&n);
+	for(int i=0;i<n;i++) scanf("%d",&x),idx[x]=i+1;
+	fill(dp,dp+n+2,oo);
+	dp[0]=0;
+	for(int i=0;i<n;i++)
+	{
+		scanf("%d",&x); x=idx[x];
+		*lower_bound(dp,dp+n+2,x)=x;
+	}
+	printf("%d\n",lower_bound(dp,dp+n+2,oo)-dp-1);
+	return 0;
+}
+/*
+5 
+3 2 1 4 5
+1 2 3 4 5
+
+3 2 1 4 5
+*/