样例输入
8 3 1 3 -1 -3 5 3 6 7
样例输出
-1 -3 -3 -3 3 3 3 3 5 5 6 7
数据范围
对于 20% 的数据，K≤N≤1000；
对于 50% 的数据，K≤N≤10^5；
对于 100% 的数据，K≤N≤10^6。
#include<bits/stdc++.h>
using namespace std;int a[1000006];void yjc(int n, int w) {deque<int> q;for (int i = 0; i < n; ++i) {while (!q.empty() && a[q.back()] <= a[i]) {q.pop_back();}q.push_back(i);if (i >= w - 1) {cout << a[q.front()] << ' ';if (q.front() == i - w + 1) {q.pop_front();}}}cout << endl;
}void xzh(int n, int w) {deque<int> q;for (int i = 0; i < n; ++i) {while (!q.empty() && a[q.back()] >= a[i]) {q.pop_back();}q.push_back(i);if (i >= w - 1) {cout << a[q.front()] << ' ';if (q.front() == i - w + 1) {q.pop_front();}}}cout << endl;
}int main() {int n, w;cin >> n >> w;for (int i = 0; i < n; ++i) {cin >> a[i];}xzh(n, w);yjc(n, w);return 0;
})
