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Re:请教大牛,我初学这个线段数,我的代码怎么wa掉了

Posted by skogt at 2010-10-28 10:30:21 on Problem 2823
In Reply To:请教大牛,我初学这个线段数,我的代码怎么wa掉了 Posted by:skogt at 2010-10-28 09:59:49
> #include<iostream>
> #include<cstring>
> #include<algorithm>
> #include<cstdlib>
> using namespace std;
> struct TREE 
> {
>     int l, r, p;
> 	int min,max;
> }tree[4*1000000];
> int data[1000005];
> void build(int l, int r, int p)
> {
> 	tree[p].l=l;
> 	tree[p].r=r;
> 	if(l==r)
> 	{
> 		tree[p].min=tree[p].max=data[l];
> 		return ;
> 	}
> 	int mid = (l+r)>>1;
>     build(l, mid, 2*p);
>     build(mid + 1, r, 2*p+1);
> 	tree[p].min=min(tree[2*p].min,tree[2*p+1].min);
> 	tree[p].max=max(tree[2*p].max,tree[2*p+1].max);
> }
> int minl[1000005],maxl[1000005];
> void query(int l,int r,int& min,int& max,int p)
> {
> 	if(tree[p].l == l && tree[p].r == r)
> 	{
> 		min = tree[p].min;
> 		max = tree[p].max;
> 		return ;
> 	}
> 	int mid = (tree[p].l + tree[p].r)>>1;
> 	if(mid >= r)
> 		query(l,r,min,max,p*2);
> 	else if(mid<l)
> 		query(l,r,min,max,p*2+1);
> 	else 
> 	{
> 		int max2,min2;
> 		query(l,mid,min,max,p*2);
> 		query(mid+1,r,min2,max2,p*2+1);
> 		min=min<min2?min:min2;
> 		max=max>max2?max:max2;
> 	}
> }
> int main()
> {
> 	int n,k;
> 	int i;
> 	while(scanf("%d%d",&n,&k)!=EOF)
> 	{
> 		for(i=1;i<=n;i++)
> 			scanf("%d",&data[i]);
> 		build(1,n,1);
> 		int maxt,mint;
> 		for(i=1;i<=n-k+1;i++)
> 		{
> 			query(i,i+k-1,mint,maxt,1);
> 			minl[i]=mint;
> 			maxl[i]=maxt;
> 		}
> 		for(i=1;i<=n-k;i++)
> 			printf("%d ",minl[i]);
> 		printf("%d\n",minl[i]);
> 		for(i=1;i<=n-k;i++)
> 			printf("%d ",maxl[i]);
> 		printf("%d\n",maxl[i]);
> 	}
> 	return 0;
> }

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