蒟蒻求助，单调队列T了两个点：#2 #10

#include <bits/stdc++.h>

struct Info {
    int time, var;
};

int n, m, num;
std::deque <Info> Q;

int main() {
    std::ios::sync_with_stdio(false);
    std::cin >> n >> m;
    for (register int i = 1; i <= n; i++) {
        std::cin >> num;
        if (Q.empty()) {
            std::cout << 0 << std::endl;
        } else {
            if (Q.front().time + m < i) {
                Q.pop_front();
            }
            std::cout << Q.front().var << std::endl;
        }
        while (!Q.empty() && Q.back().var >= num) {
            Q.pop_back();
        }
        Info im = {i, num};
        Q.push_back(im);
    }
    return 0;
}

救救孩子……