标签：des style blog http color java os strong
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题意不说了，很简单的线段树题目了，就是打标记改点求段，修改段时由于极限次数不多，直接暴力更新到点，
好久没写线段树了，错了好多次，写的好傻逼。
代码：
/* ***********************************************
Author :rabbit
Created Time :2014/8/4 14:58:15
File Name :11.cpp
************************************************ */
#pragma comment(linker, "/STACK:102400000,102400000")
#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <sstream>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <string>
#include <time.h>
#include <math.h>
#include <queue>
#include <stack>
#include <set>
#include <map>
using namespace std;
#define INF 0x3f3f3f3f
#define eps 1e-8
#define pi acos(-1.0)
typedef long long ll;
ll fib[100];
struct node{
ll l,r;
ll sum,flag;
}a[800300];
ll m,n;
void pushup(ll t){
if(a[t].l==a[t].r)return;
a[t].sum=a[2*t].sum+a[2*t+1].sum;
a[t].flag=a[2*t].flag&a[2*t+1].flag;
}
void build(ll t,ll l,ll r){
// cout<<"hhh "<<l<<" "<<r<<endl;
a[t].l=l;
a[t].r=r;
a[t].sum=a[t].flag=0;
if(l==r)return;
ll mid=(l+r)/2;
build(2*t,l,mid);
build(2*t+1,mid+1,r);
pushup(t);
}
void update1(ll t,ll p,ll val){
if(a[t].l==a[t].r){
a[t].sum+=val;
a[t].flag=0;
return;
}
ll mid=(a[t].l+a[t].r)/2;
if(p<=mid)update1(2*t,p,val);
else update1(2*t+1,p,val);
pushup(t);
}
ll Find(ll x){
if(x <= 1)return 1;
int l = 1, r = 80, id = 80;
while(l <= r){
int mid = l+r>>1;
if(fib[mid] > x) id = mid, r = mid-1;
else l = mid+1;
}
if(x-fib[id-1] <= fib[id]-x) return fib[id-1];
return fib[id];
}
void update2(ll t,ll l,ll r){
if(a[t].flag)return;
if(a[t].l==a[t].r){
a[t].sum=Find(a[t].sum);
a[t].flag=1;
//cout<<"ddd "<<l<<" "<<r<<" "<<a[t].sum<<endl;
return;
}
ll mid=(a[t].l+a[t].r)/2;
if(l<=mid)update2(2*t,l,r);
if(r>mid)update2(2*t+1,l,r);
pushup(t);
}
ll getsum(ll t,ll l,ll r){
if(a[t].l>=l&&a[t].r<=r)return a[t].sum;
ll mid=(a[t].l+a[t].r)/2;
ll ans=0;
if(l<=mid)ans+=getsum(2*t,l,r);
if(r> mid) ans+=getsum(2*t+1,l,r);
return ans;
}
int main()
{
// freopen("data.in","r",stdin);
// freopen("data.out","w",stdout);
fib[0]=1;fib[1]=1;
for(ll i=2;i<=90;i++)fib[i]=fib[i-1]+fib[i-2];
while(~scanf("%I64d%I64d",&n,&m)){
// cout<<"ddd "<<endl;
build(1,1,n);
//cout<<"ppp "<<endl;
while(m--){
ll l,r,op;
scanf("%I64d%I64d%I64d",&op,&l,&r);
if(op==1){
update1(1,l,r);
// cout<<"han 1"<<endl;
}
if(op==2){
printf("%I64d\n",getsum(1,l,r));
// cout<<"han 2"<<endl;
}
if(op==3){
update2(1,l,r);
// cout<<"han 3"<<endl;
}
}
}
return 0;
}
/*
5 10
2 1 5
3 1 5
2 1 5
1 1 10
2 1 5
3 1 5
2 1 5
4 5
1 1 3
2 1 2
3 2 3
1 2 1
2 1 4
*/
标签：des style blog http color java os strong
原文地址：http://blog.csdn.net/xianxingwuguan1/article/details/38374041
