记录编号	251099	评测结果	AAAAAAAAAAAAAAAAAAAA
题目名称	数字查询	最终得分	100
用户昵称	FETS 1/3	是否通过	通过
代码语言	C++	运行时间	11.340 s
提交时间	2016-04-16 21:08:35	内存使用	1.88 MiB

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#define MAXN 40010
#define GET (ch>='0'&&ch<='9')
using namespace std;
int n,m,size,cnt,maxn,Ans,lastans;
int a[MAXN],belong[MAXN],first[300],last[300],Count[MAXN];
int hash[MAXN],L[MAXN],R[MAXN];
int ans[300][300];//块间答案 
struct Num
{
    int pos,x;
    bool operator <(const Num& a)const  {return x==a.x?pos<a.pos:x<a.x;}
}s[MAXN];
void in(int &x)
{
    char ch=getchar();x=0;
    while (!GET)    ch=getchar();
    while (GET) x=x*10+ch-'0',ch=getchar();
}
int find(int x)
{
    int l=1,r=n,mid;
    while (l<=r)
    {
        mid=(l+r)>>1;
        if (hash[mid]<x)    l=mid+1;
        else    if (hash[mid]>x)    r=mid-1;
        else    return mid;
    }
}
int upper(int l,int r,int x)//不会用STL星人 
{
    int ret=0,mid;
    while (l<=r)
    {
        mid=(l+r)>>1;
        if (s[mid].pos>x)   r=mid-1;
        else    ret=mid,l=mid+1;
    }
    return ret;
}
int lower(int l,int r,int x)
{
    int ret=0,mid;
    while (l<=r)
    {
        mid=(l+r)>>1;
        if (s[mid].pos<x)   l=mid+1;
        else    ret=mid,r=mid-1;
    }
    return ret;
}
int query(int l,int r)
{
    int ret;maxn=0;
    if (belong[l]==belong[r])
    {
        for (int i=l;i<=r;i++)
        {
            int Cnt=upper(L[a[i]],R[a[i]],r)-lower(L[a[i]],R[a[i]],l)+1;
            if (Cnt>maxn||(Cnt==maxn&&a[i]<ret))    maxn=Cnt,ret=a[i];
        }
        return ret;
    }
    if (belong[l]+1<belong[r])  ret=ans[belong[l]+1][belong[r]-1],maxn=upper(L[ret],R[ret],r)-lower(L[ret],R[ret],l)+1;
    for (int i=l;i<=last[belong[l]];i++)
    {
        int Cnt=upper(L[a[i]],R[a[i]],r)-lower(L[a[i]],R[a[i]],l)+1;
        if (Cnt>maxn||(Cnt==maxn&&a[i]<ret))    maxn=Cnt,ret=a[i];
    }
    for (int i=first[belong[r]];i<=r;i++)
    {
        int Cnt=upper(L[a[i]],R[a[i]],r)-lower(L[a[i]],R[a[i]],l)+1;
        if (Cnt>maxn||(Cnt==maxn&&a[i]<ret))    maxn=Cnt,ret=a[i];
    }
    return ret;
}
int main()
{
	freopen("numquery.in","r",stdin);
	freopen("numquery.out","w",stdout);
    in(n);in(m);size=(int)(sqrt(n*1.0));cnt=n/size+(bool)(n%size);//划分块 
    for (int i=1;i<=n;i++)  in(a[i]),hash[i]=a[i],belong[i]=(i-1)/size+1;
    for (int i=1;i<=cnt;i++)    first[i]=size*(i-1)+1,last[i]=size*i;
    sort(hash+1,hash+n+1);
    for (int i=1;i<=n;i++)  a[i]=find(a[i]);//离散 
    for (int i=1;i<=n;i++)  s[i].x=a[i],s[i].pos=i;
    sort(s+1,s+n+1);int l,r;
    for (int i=1;i<=n;i++)//记录每个数出现左右区间 
    {
        if (!L[s[i].x]) L[s[i].x]=i;
        R[s[i].x]=i;
    }
    for (int i=1,t;i<=cnt;i++)
    {
        memset(Count,0,sizeof(Count));maxn=0;
        for (int j=first[i];j<=n;j++)
        {
            Count[a[j]]++;
            if (Count[a[j]]>maxn||(Count[a[j]]==maxn&&a[j]<t))  maxn=Count[a[j]],t=a[j];
            ans[i][belong[j]]=t;
        }
    }
    for (int i=1;i<=m;i++)
    {
        in(l);in(r);l=(l+lastans-1)%n+1;r=(r+lastans-1)%n+1;
        if (l>r)    swap(l,r);
        Ans=hash[query(l,r)];lastans=Ans;
        printf("%d\n",Ans);
    }
}