1 #include<cstdio>
  2 #define MAXN 200010
  3 #define INF 987654321
  4 int a[MAXN],s[MAXN],tree[MAXN<<2],lazy[MAXN<<2],k;
  5 inline int MAX(int x,int y)
  6 {
  7     return x>y?x:y;
  8 }
  9 inline int MIN(int x,int y)
 10 {
 11     return x>y?y:x;
 12 }
 13 inline void swap(int &x,int &y)
 14 {
 15     int temp=x;
 16     x=y;
 17     y=temp;
 18 }
 19 inline void PushUp(int rt)
 20 {
 21     tree[rt]=MAX(tree[rt<<1],tree[rt<<1|1]);
 22 }
 23 void Build(int L,int R,int rt)
 24 {
 25     lazy[rt]=0;
 26     if(L==R)
 27         tree[rt]=s[L+k-1]-s[L-1];
 28     else
 29     {
 30         int mid=(L+R)>>1;
 31         Build(L,mid,rt<<1);
 32         Build(mid+1,R,rt<<1|1);
 33         PushUp(rt);
 34     }
 35 }
 36 inline void PushDown(int rt)
 37 {
 38     if(lazy[rt])
 39     {
 40         tree[rt<<1]+=lazy[rt];
 41         tree[rt<<1|1]+=lazy[rt];
 42         lazy[rt<<1]+=lazy[rt];
 43         lazy[rt<<1|1]+=lazy[rt];
 44         lazy[rt]=0;
 45     }
 46 }
 47 void Update(int x,int y,int z,int L,int R,int rt)
 48 {
 49     if(x<=L&&R<=y)
 50     {
 51         lazy[rt]+=z;
 52         tree[rt]+=z;
 53     }
 54     else
 55     {
 56         int mid=(L+R)>>1;
 57         PushDown(rt);
 58         if(mid>=x)
 59             Update(x,y,z,L,mid,rt<<1);
 60         if(y>mid)
 61             Update(x,y,z,mid+1,R,rt<<1|1);
 62         PushUp(rt);
 63     }
 64 }
 65 int Query(int x,int y,int L,int R,int rt)
 66 {
 67     if(x<=L&&R<=y)
 68         return tree[rt];
 69     int ans=-INF,mid=(L+R)>>1;
 70     PushDown(rt);
 71     if(mid>=x)
 72         ans=MAX(ans,Query(x,y,L,mid,rt<<1));
 73     if(y>mid)
 74         ans=MAX(ans,Query(x,y,mid+1,R,rt<<1|1));
 75     return ans;
 76 }
 77 int main()
 78 {
 79     int n,m,c,i,p,x,y;
 80     scanf("%d",&c);
 81     while(c--)
 82     {
 83         scanf("%d%d%d",&n,&m,&k);
 84         s[0]=0;
 85         for(i=1;i<=n;i++)
 86         {
 87             scanf("%d",&a[i]);
 88             s[i]=s[i-1]+a[i];
 89         }
 90         n-=k-1;
 91         Build(1,n,1);
 92         while(m--)
 93         {
 94             scanf("%d%d%d",&p,&x,&y);
 95             if(p==0)
 96             {
 97                 if(a[x]!=y)
 98                 {
 99                     Update(MAX(1,x-k+1),x,y-a[x],1,n,1);
100                     a[x]=y;
101                 }
102             }
103             else if(p==1)
104             {
105                 if(x!=y)
106                 {
107                     Update(MAX(1,x-k+1),x,a[y]-a[x],1,n,1);
108                     Update(MAX(1,y-k+1),y,a[x]-a[y],1,n,1);
109                     swap(a[x],a[y]);
110                 }
111             }
112             else
113                 printf("%d\n",Query(x,y-k+1,1,n,1));
114         }
115     }
116     return 0;
117 }
posted on 2012-05-21 15:36  DrunBee  阅读(267)  评论(0编辑  收藏  举报