• ## Green Boy Can't You Solve It Out?

2 problems for div3 participants Bomb Defusing II Statement Find how many years in range [l,r] that it has Sept.1 as a weekend(Sunday and Saturday)? Example l=2017,r=2019 out=2 2018/9/1 is Saturday while 2019/9/1 is Sunday Constriants (Div2A-Div2B)……
XGN 2019-08-31
• ## Orange Boy Can You Solve It Out? Ep. 21.8

思考题 within 5 min Bomb defusing 「Readers, please set up a 5-minute timer before you continue to read」 Green boy envied Orange Boy for having such a high rating. So he decided to send Orange Boy a present: a bomb! The bomb will explode in 5 minu……
XGN 2019-08-28
• ## Orange Boy Can You Solve It Out? Ep.21.5

APPROXIMATE PROBLEM WARNING Metro There are N metro stations in a city. The distance between each two station is a fixed integer x. Your task is to construct some metro lines across the stations. We define a cost from station A to station B as the ……
XGN 2019-08-25
• ## Orange Boy Can You Solve It Out? Ep.21

思考题 for bread Bread Story You have a piece of bread which can be seen as a N*M grid. You also have a bottle of jam. You want to put some jam on the bread to make the bread delicious. You can do the following two operations: Put 1 unit of jam on……
XGN 2019-08-24
• ## Orange Boy Can You Solve It Out? Ep.20.5

APPROXIMATE PROBLEM WARNING Graph There is a grid of size N*M. Each grid could be "#" or ".". You need to find the shortest path from (1,1) to (N,M) by walking on "." only. But you are NOT given the graph. You can only see the grids near you. That ……
XGN 2019-08-20
• ## Orange Boy Can You Solve It Out? Ep.20

「考える問題は簡単ですか」 Programming Detect You are given a directed graph G with N nodes and M edges. Each node has an operation, which could be "def sth" or "use sth". An array of nodes A is called Exceptional iff: - for each 1\leq i\leq |A|-1 ……
XGN 2019-08-20
• ## Orange Boy Can You Solve It Out? Ep.19.5

野兽成分更多的思考题 广西省人大音乐II 不支持audio！！ Electric Heritage Haniyasushin Keiki loves crafting. She has n kinds of items. The i-th kind of item has name name_i. She also has m recipes. The i-th recipe needs len_i of different kinds of di……
XGN 2019-08-17
• ## Orange Boy Can You Solve It Out? Ep.19

比以往更加黑暗的思考题 广西省人大音乐 不支持audio！！ Idolatrize World Haniyasushin Keiki loves crafting. She has n kinds of items. The i-th kind of item has name name_i. She also has m recipes. The i-th recipe needs len_i of different kinds of dif……
XGN 2019-08-16
• ## Orange Boy/Red Girl/Legendary Grandmeow Can You Solve It Out?

思考题 for grand contest Orange Boy(Monk.eyk.ing),Red girl(Mack.erel.pike) and their cat LGM(Legendary.Grand.Meow) are a happy family. But in fact, they are the heroes that is helping the world in silent. One day, the earth is under the attack……
XGN 2019-07-26
• ## Orange Boy Can You Solve It Out? Ep.18

思考题 about poems Is your love as confusing as the sun acquiesced? Once a Chinese poem said: There's sun in the east but rain in the west, Is your love as confusing as the sun acquiesced? Now you are given a undirected weighted graph G of N ……
XGN 2019-07-25