//这是一道区间求最大值和最小值的题,模板题//
AC代码:
#include<stdio.h> #include<string.h> #include<algorithm> using namespace std; #define lson l,m,rt<<1 #define rson m+1,r,rt<<1|1 const int MAX=10000005; int sum[MAX>>2]; int cnt[MAX>>2]; void pushup(int rt) { sum[rt]=min(sum[rt<<1],sum[rt<<1|1]); } void Pushup(int rt) { cnt[rt]=max(cnt[rt<<1],cnt[rt<<1|1]); } void build(int l,int r,int rt) { if(l==r) { scanf("%d",&sum[rt]); cnt[rt]=sum[rt]; return; } int m=(l+r)>>1; build(lson); build(rson); pushup(rt); Pushup(rt); } int querty(int L,int R,int l,int r,int rt) { if(L<=l&&R>=r) { return sum[rt]; } int m=(l+r)>>1; int t=1<<29; if(L<=m) t=min(t,querty(L,R,lson)); if(R>m) t=min(t,querty(L,R,rson)); return t; } int Querty(int L,int R,int l,int r,int rt) { if(L<=l&&R>=r) { return cnt[rt]; } int m=(l+r)>>1; int t=-1<<29; if(L<=m) t=max(t,Querty(L,R,lson)); if(R>m) t=max(t,Querty(L,R,rson)); return t; } int main() { int n,k; scanf("%d%d",&n,&k); build(1,n,1); for(int i=1;i<=n-k+1;i++) { if(i==1) { printf("%d",querty(i,i+k-1,1,n,1)); } else { printf(" %d",querty(i,i+k-1,1,n,1)); } } printf("\n"); for(int i=1;i<=n-k+1;i++) { if(i==1) { printf("%d",Querty(i,i+k-1,1,n,1)); } else { printf(" %d",Querty(i,i+k-1,1,n,1)); } } return 0; }