## [Ans] Which city has the most billionaires?

Which city has the most billionaires? – Last year, Beijing was the city home to the most billionaires in the world. However, this year, New York City reclaimed its crown. With 107 billionaire residents, worth over \$640 billion, the Big Apple is home to more billionaires than any other city on the planet. A fresh … Read more

## [Answer] Which popular form of exercise is named after a person?

Which popular form of exercise is named after a person? …Pilates is a form of low-impact exercise that focuses on improving flexibility, strength, and body awareness through controlled movements. It was created in the 1920s by German physical trainer Joseph Pilates for rehabilitation purposes. His method was influenced by other forms of exercise, including gymnastics … Read more

## [Answer] How many countries end in “stan”?

How many countries end in “stan”? 3 5 7 9 The correct answer of How many countries end in “stan”? is 7. [Ans] How many countries end in “stan”? If you guessed a lucky seven, you’d be right on the money. Pakistan, Afghanistan, Turkmenistan, Kyrgyzstan, Uzbekistan, Tajikistan, and Kazakhstan make up the seven Central Asian … Read more

## [Ans] Which popular form of exercise is named after a person?

Which popular form of exercise is named after a person? – Pilates is a form of low-impact exercise that focuses on improving flexibility, strength, and body awareness through controlled movements. It was created in the 1920s by German physical trainer Joseph Pilates for rehabilitation purposes. His method was influenced by other forms of exercise, including … Read more

## [Solution] Decinc Dividing solution codeforces

Decinc Dividing solution codeforces – Let’s call an array 𝑎a of 𝑚m integers 𝑎1,𝑎2,…,𝑎𝑚a1,a2,…,am Decinc if 𝑎a can be made increasing by removing a decreasing subsequence (possibly empty) from it. [Solution] Decinc Dividing solution codeforces For example, if 𝑎=[3,2,4,1,5]a=[3,2,4,1,5], we can remove the decreasing subsequence [𝑎1,𝑎4][a1,a4] from 𝑎a and obtain 𝑎=[2,4,5]a=[2,4,5], which is increasing. You are given a permutation 𝑝p of numbers from 11 to 𝑛n. Find the number of pairs of integers (𝑙,𝑟)(l,r) with 1≤𝑙≤𝑟≤𝑛1≤l≤r≤n such that 𝑝[𝑙…𝑟]p[l…r] (the … Read more

## [Solution] Keshi in Search of AmShZ solution codeforces

Keshi in Search of AmShZ solution codeforces – AmShZ has traveled to Italy from Iran for the Thom Yorke concert. There are 𝑛n cities in Italy indexed from 11 to 𝑛n and 𝑚m directed roads indexed from 11 to 𝑚m. Initially, Keshi is located in the city 11 and wants to go to AmShZ’s house in the city 𝑛n. Since Keshi doesn’t know the map of Italy, AmShZ helps … Read more

## [Solution] Fake Plastic Trees solution codeforces

Fake Plastic Trees solution codeforces – We are given a rooted tree consisting of 𝑛n vertices numbered from 11 to 𝑛n. The root of the tree is the vertex 11 and the parent of the vertex 𝑣v is 𝑝𝑣pv. [Solution] Fake Plastic Trees solution codeforces There is a number written on each vertex, initially all numbers are equal to 00. Let’s denote the number written … Read more

## [Solution] Directional Increase solution codeforces

Directional Increase solution codeforces – We have an array of length 𝑛n. Initially, each element is equal to 00 and there is a pointer located on the first element. [Solution] Directional Increase solution codeforces We can do the following two kinds of operations any number of times (possibly zero) in any order: If the pointer is not … Read more

## [Solution] Paranoid String solution codeforces

Paranoid String solution codeforces – Let’s call a binary string 𝑇T of length 𝑚m indexed from 11 to 𝑚m paranoid if we can obtain a string of length 11 by performing the following two kinds of operations 𝑚−1m−1 times in any order : [Solution] Paranoid String solution codeforces Select any substring of 𝑇T that is equal to 01, and then replace it with 1. Select any substring of 𝑇T that is equal to 10, … Read more

## [Solution] Creep solution codeforces

Creep solution codeforces – Define the score of some binary string 𝑇T as the absolute difference between the number of zeroes and ones in it. (for example, 𝑇=T= 010001 contains 44 zeroes and 22 ones, so the score of 𝑇T is |4−2|=2|4−2|=2). [Solution] Creep solution codeforces Define the creepiness of some binary string 𝑆S as the maximum score among all of its prefixes (for example, the creepiness of 𝑆=S= 01001 is … Read more