RMQ模板（不保證正確）

#include<cstdio>
#include<cmath>
#include<iostream>
#include<cstring>
#include<algorithm>
using namespace std;
int f[210000][21];
int read(){
	char x;
	while((x=getchar())>'9' ||x<'0');
	int u=x-'0';
	while((x=getchar())<='9' && x>='0')u=u*10+x-'0';
	return u;
}
void RMQ(int x){
	int i,j;
	for(i=1;i<=20;i++)
		for(j=1;j<=x;j++)
			if(j+(1<<i)-1<=x)
				f[j][i]=min(f[j][i-1],f[j+(1<<(j-1))][i-1]);
}
int main(){
#ifndef ONLINE_JUDGE
    freopen("input.in","r",stdin);
    freopen("output.out","w",stdout);
#endif
    int i,j,k,m,n;
	n=read();
	m=read();
	for(i=1;i<=n;i++)
		f[i][0]=read();
	RMQ(n);
	printf("0\n");
	k=log(m)/log(2);
	for(i=2;i<=n;i++){
		int u=i-m;
		if(u<=0)u=1;
		printf("%d\n",min(f[u][k-1],f[u+(1<<(k-1))][k-1]));
	}
	return 0;
}

MADE by 羅旅洲