HDU 4027 Can you answer these queries?

Can you answer these queries?

Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65768/65768 K (Java/Others)
Total Submission(s): 8219    Accepted Submission(s): 1871

Problem Description

A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Each of the battleships can be marked a value of endurance. For every attack of our secret weapon, it could decrease the endurance of a consecutive part of battleships by make their endurance to the square root of it original value of endurance. During the series of attack of our secret weapon, the commander wants to evaluate the effect of the weapon, so he asks you for help.
You are asked to answer the queries that the sum of the endurance of a consecutive part of the battleship line.

Notice that the square root operation should be rounded down to integer.

 

Input

The input contains several test cases, terminated by EOF.
  For each test case, the first line contains a single integer N, denoting there are N battleships of evil in a line. (1 <= N <= 100000)
  The second line contains N integers Ei, indicating the endurance value of each battleship from the beginning of the line to the end. You can assume that the sum of all endurance value is less than 2⁶³.
  The next line contains an integer M, denoting the number of actions and queries. (1 <= M <= 100000)
  For the following M lines, each line contains three integers T, X and Y. The T=0 denoting the action of the secret weapon, which will decrease the endurance value of the battleships between the X-th and Y-th battleship, inclusive. The T=1 denoting the query of the commander which ask for the sum of the endurance value of the battleship between X-th and Y-th, inclusive.

 

Output

For each test case, print the case number at the first line. Then print one line for each query. And remember follow a blank line after each test case.

 

Sample Input

101 2 3 4 5 6 7 8 9 1050 1 101 1 101 1 50 5 81 4 8

 

Sample Output

Case #1:1976

 

Source

The 36th ACM/ICPC Asia Regional Shanghai Site —— Online Contest

解题思路：注意到开方很快就能让一个数变为1，因此对每个区间直接更新到底，发现全部是1就不用再更新了。

#include <iostream>#include <cstdio>#include <cmath>#include <cstring>#define Max 100005#define lson l,m,rt<<1#define rson m+1,r,rt<<1|1#define LL long longusing namespace std;LL sum[Max<<2];inline void Pushup(int p){    sum[p]=sum[p<<1]+sum[p<<1|1];}void build(int l,int r,int rt){    if(l==r)    {        scanf("%I64d",&sum[rt]);        return ;    }    int m=(l+r)>>1;    build(lson);    build(rson);    Pushup(rt);}void update(int L,int R,int l,int r,int rt){    if(sum[rt]==r-l+1)        return ;    if(l==r)    {        sum[rt]=sqrt(sum[rt]*1.0);        return ;    }    int m=(l+r)>>1;    if(L<=m)        update(L,R,lson);    if(R>m)        update(L,R,rson);    Pushup(rt);}LL query(int L,int R,int l,int r,int rt){    LL ans=0;    if(l>=L&&r<=R)        return sum[rt];    int m=(l+r)>>1;    if(L<=m)        ans+=query(L,R,lson);    if(R>m)        ans+=query(L,R,rson);    return ans;}int main(){    int n,m,a,b,s,t=1;    while(scanf("%d",&n)!=-1)    {        memset(sum,0,sizeof(sum));        build(1,n,1);        scanf("%d",&m);        printf("Case #%d:\n",t++);        while(m--)        {            scanf("%d%d%d",&s,&a,&b);            if(a>b)                swap(a,b);            if(s==0)                update(a,b,1,n,1);            else                printf("%I64d\n",query(a,b,1,n,1));        }        printf("\n");    }    return 0;}