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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#19001 | #1877. Matryoshka Dolls | alan__zhao | Compile Error | / | / | C | 1.9kb | 2022-01-27 18:17:53 | 2022-05-18 04:05:34 |
Judging History
你现在查看的是最新测评结果
- [2023-08-10 23:21:45]
- System Update: QOJ starts to keep a history of the judgings of all the submissions.
- [2022-05-18 04:05:34]
- 评测
- 测评结果:Compile Error
- 用时:0ms
- 内存:0kb
- [2022-01-27 18:17:53]
- 提交
answer
#include <iostream>
#include <cstring>
#include <algorithm>
#include <vector>
#include <cmath>
using namespace std;
#define For(Ti,Ta,Tb) for(int Ti=(Ta);Ti<=(Tb);++Ti)
#define Dec(Ti,Ta,Tb) for(int Ti=(Ta);Ti>=(Tb);--Ti)
#define Debug(...) fprintf(stderr,__VA_ARGS__)
typedef long long ll;
const int N=5e5+5;
int Abs(int x){return x<0?-x:x;}
int n,m,a[N],bsiz,pos[N];
struct Fenwick{
int t[N]={};
void Add(int p,int k){for(;p<=n;p+=p&-p) t[p]+=k;}
int QSum(int p){int res=0;for(;p;p-=p&-p) res+=t[p]; return res;}
int QVal(int k){
int p=0,s=0;
Dec(i,20,0){
if(p+(1<<i)>n||s+t[p+(1<<i)]>=k) continue;
p+=1<<i,s+=t[p];
}
return p+1;
}
int QPre(int p){
int s=QSum(p-1);
return s?QVal(s):0;
}
int QNext(int p){return QVal(QSum(p)+1);}
};
namespace Mo{
struct Query{
int l,r,i;
bool operator<(const Query &x){
if(l/bsiz!=x.l/bsiz) return l<x.l;
return ((l/bsiz)&1)?(r<x.r):(r>x.r);
}
}q[N];
ll cur;Fenwick bit;
void Oper(int x,int k){
int pre=bit.QPre(x),nxt=bit.QNext(x);
bit.Add(x,k);
if(!pre&&nxt==n+1) return;
if(nxt!=n+1) cur+=k*Abs(pos[nxt]-pos[x]);
if(pre) cur+=k*Abs(pos[pre]-pos[x]);
if(nxt!=n+1&&pre) cur+=-k*Abs(pos[nxt]-pos[pre]);
}
void Add(int x){Oper(x,1);}
void Del(int x){Oper(x,-1);}
ll ans[N];
void Solve(){
bsiz=max(1.,double(n)/sqrt(m));
For(i,1,m) cin>>q[i].l>>q[i].r,q[i].i=i;
sort(q+1,q+m+1);
for(int i=1,l=1,r=0;i<=m;++i){
if(q[i].l==q[i].r){
ans[q[i].i]=0;continue;
}
while(l>q[i].l) Add(a[--l]);
while(r<q[i].r) Add(a[++r]);
while(l<q[i].l) Del(a[l++]);
while(r>q[i].r) Del(a[r--]);
ans[q[i].i]=cur;
}
For(i,1,m) cout<<ans[i]<<'\n';
}
}
int main(){
//freopen("rrads.in","r",stdin);
//freopen("rrads.out","w",stdout);
#ifndef zyz
ios::sync_with_stdio(false),cin.tie(nullptr);
#endif
cin>>n>>m;
For(i,1,n) cin>>a[i],pos[a[i]]=i;
Mo::Solve();
return 0;
}
详细
answer.code:1:10: fatal error: iostream: No such file or directory #include <iostream> ^~~~~~~~~~ compilation terminated.