이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
long long n,k;
long long niza[200001];
long long dp[800001][2];
long long traze;
long long najdi(long long l,long long r,long long poz,long long koj)
{
//cout<<"l="<<l<<" r="<<r<<" traze="<<traze<<" koj="<<koj<<" gleda "<<dp[poz][koj]<<endl;
if (traze<=dp[poz][koj]) return 0;
if (l==r) return r;
long long mid = (l+r)/2;
long long op = najdi(mid+1,r,poz*2+1,koj);
if (op>0) return op;
return najdi(l,mid,poz*2,koj);
}
long long p;
long long dodaj(long long l,long long r,long long poz,long long koj)
{
if (l>p || r<p) return dp[poz][koj];
if (l==r) {
dp[poz][koj] = min(traze,dp[poz][koj]);
//cout<< "dp["<<poz<<"]["<<koj<<"] = "<<dp[poz][koj]<<endl;
return dp[poz][koj];
}
long long mid = (l+r)/2;
dp[poz][koj] = min(dodaj(l,mid,poz*2,koj),dodaj(mid+1,r,poz*2+1,koj));
//cout<< "dp["<<poz<<"]["<<koj<<"] = "<<dp[poz][koj]<<endl;
return dp[poz][koj];
}
int main()
{
cin>>n>>k;
for (long long i=1;i<=n;i++) cin>>niza[i];
for (long long i=0;i<=n*4;i++){
dp[i][0]=1000000;
dp[i][1]=1000000;
}
long long odg = 0;
for (long long i=1;i<=n;i++)
{
traze = niza[i]-k;
long long op1 = najdi(1,n,1,0)+1;
traze = niza[i];
long long op2 = najdi(1,n,1,0)+1;
long long op3 = najdi(1,n,1,1)+1;
traze = niza[i]-k;
p = op1;
dodaj(1,n,1,0);
traze = niza[i];
p = op2;
dodaj(1,n,1,1);
traze = niza[i];
p = op3;
dodaj(1,n,1,1);
odg = max(odg,op1);
odg = max(odg,op2);
odg = max(odg,op3);
//cout<< "za "<<niza[i]<< " op1="<<op1<<" op2=" <<op2<<" op3="<<op3<<endl<<endl;
}
cout<<odg<<endl;
return 0;
}
/*
8 100
7 3 5 12 2 7 3 4
*/
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