이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define fr first
#define sc second
long long d=-1,pwk,dv=1e9+9;
map<long long,bool> vtd;
pair<long long,long long> as[100069];
long long pw(long long x,long long y)
{
if(!y)
{
return 1;
}
pwk=pw(x,y/2);
pwk=pwk*pwk%dv;
if(y%2)
{
pwk=pwk*x%dv;
}
return pwk;
}
int valid(int n,int a[])
{
long long i,k;
for(i=0;i<n;i++)
{
if(vtd[a[i]])
{
return 0;
}
vtd[a[i]]=1;
if(a[i]<=n)
{
k=(a[i]+n-i-1)%n+1;
if(d+1&&k!=d)
{
return 0;
}
d=k;
}
}
return 1;
}
int replacement(int n,int a[],int sq[])
{
long long i,k=n,l,zs=0;
valid(n,a);
d+=2*(d==-1);
for(i=0;i<n;i++)
{
as[i]={a[i],i};
}
sort(as,as+n);
for(i=0;i<n;i++)
{
if(as[i].fr>n)
{
for(;k<as[i].fr;k++)
{
l=k;
if(k==n||(i&&k==as[i-1].fr))
{
l=(d+as[i].sc-1)%n+1;
}
sq[zs]=l;
zs++;
}
}
}
return zs;
}
int countReplacement(int n,int a[])
{
long long i,l=n,z=1;
if(!valid(n,a))
{
return 0;
}
if(d==-1)
{
z=z*n%dv;
}
sort(a,a+n);
for(i=0;i<n;i++)
{
if(a[i]>n)
{
z=z*pw(n-i,a[i]-l-1)%dv;
l=a[i];
}
}
return z;
}
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