Sponsors

Codeforces Round #444 (Div. 2), problem: (F) Row of Models Solution In C/C++

#include<bits/stdc++.h>
#define maxn 1000050

using namespace std;

int a[maxn],b[maxn],c[maxn],n,k,m,t;

int main()
{
    scanf("%d%d",&n,&k);
    for (int i=0;i<n;i++)
        scanf("%d",&a[i]);
    a[n]=0; memset(c,-1,sizeof(c));
    m=0;b[m]=0;c[0]=0;t=0;
    for (int i=1;i<=n;i++) if (a[i]<a[b[m]]) b[++m]=i,c[i]=m;
    for (int i=1;i<=m;i++)
        if (b[i]-b[i-1]>2*k) {puts("NO");return 0;}
        else if (b[i]-b[i-1]>k)
        {
            if (t) {puts("NO");return 0;} else t=i;
        }
    if (!t||t<m&&b[t+1]-b[t-1]<=2*k) {puts("YES");return 0;}
    for (int i=b[t]+1;i<n;i++)
        if (c[i]==-1||b[c[i]+1]-b[c[i]-1]<=k){
            if (a[i]<a[b[t-1]]&&a[i]>a[b[t]]) {puts("YES");return 0;}
        }
    puts("NO");return 0;
}

THE FREEPER CANTEEN –...

The Freeper Canteen: A Look That Up, It Must...

215% PENGU Rally Incoming?...

215% PENGU Rally Incoming? Analyst Predicts Imminent Breakout The cryptocurrency...

Junk is the new...

Junk is the New Punk: Why We're Falling Back...

Are weighted vests good...

Unlocking the Power of AI-Generated Content for SEO In today's...

Are weighted vests good...

Unlocking the Power of AI-Generated Content: A Boon or...

TSMC cuts Chinese tools...

TSMC Ditches Chinese Tools for Cutting-Edge Chip Production Taiwan Semiconductor...

THE FREEPER CANTEEN – The Look That Up, It Must Be On My Bucket List Quiz – Wednesday, August 27, 2025

The Freeper Canteen: A Look That Up, It Must Be On My Bucket List The Freeper Canteen, a unique online community, has recently launched a...

215% PENGU Rally Incoming? Analyst Says Token ‘Inches’ From Next Leg Up

215% PENGU Rally Incoming? Analyst Predicts Imminent Breakout The cryptocurrency market is constantly fluctuating, and predicting the next big move is a challenge. However, one...

Junk is the new punk: Why we’re falling back in love with retro tech

Junk is the New Punk: Why We're Falling Back in Love with Retro Tech In a world dominated by sleek, minimalist designs and cutting-edge technology,...

Are weighted vests good for bones and muscle? Fact-checking a fitness trend – NPR

Unlocking the Power of AI-Generated Content for SEO In today's digital landscape, search engine optimization (SEO) is paramount for online success. But creating high-quality,...

Are weighted vests good for bones and muscle? Fact-checking a fitness trend – NPR

Unlocking the Power of AI-Generated Content: A Boon or Bane for SEO? The world of search engine optimization (SEO) is constantly evolving, and the recent...

TSMC cuts Chinese tools from cutting-edge chip production to avoid US ire – Nikkei Asia

TSMC Ditches Chinese Tools for Cutting-Edge Chip Production Taiwan Semiconductor Manufacturing Company (TSMC), the world's leading chipmaker, is reportedly phasing out Chinese-made equipment from its...

Google Messages beta rolling out QR code key verification – 9to5Google

Google Messages Adds QR Code Key Verification for Enhanced Security Google is bolstering the security of its Messages app with a new feature rolling out...

A Secretive US Space Plane Will Soon Test Quantum Navigation Technology

## US Space Plane to Test Revolutionary Quantum Navigation Technology The United States is on the cusp of a significant leap forward in space navigation....

The Next Species in Line for Colossal’s De-Extinction

The Next Species in Line for Colossal’s De-Extinction The successful resurrection of dire wolves validates de-extinction technology while opening possibilities for restoring other lost species....