delete pics to save space

7.2823.cpp

@@ -0,0 +1,32 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+const int maxn=1e6+5;
+int n,k,a[maxn],q1[maxn],h1,t1,q2[maxn],h2,t2,r1[maxn],r2[maxn];
+inline void insert(int p)
+{
+	while(h1<t1&&a[p]<=a[q1[t1-1]]) t1--;
+	q1[t1++]=p;
+	while(h2<t2&&a[p]>=a[q2[t2-1]]) t2--;
+	q2[t2++]=p;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&k);
+	for(int i=0;i<n;i++) scanf("%d",&a[i]);
+	for(int i=0;i<k-1;i++) insert(i);
+	for(int i=k-1;i<n;i++)
+	{
+		while(h1<t1&&i-q1[h1]+1>k) h1++;
+		while(h2<t2&&i-q2[h2]+1>k) h2++;
+		insert(i);
+		r1[i-k+1]=a[q1[h1]];
+		r2[i-k+1]=a[q2[h2]];
+	}
+	for(int i=0;i<n-k+1;i++) printf("%d ",r1[i]); puts("");
+	for(int i=0;i<n-k+1;i++) printf("%d ",r2[i]); puts("");
+	return 0;
+}