USACO 2021 February Contest, Gold Problem 3. Count the Cows As is typical, Farmer John's cows have spread themselves out along his largest pasture, which can be regarded as a large 2D grid of squar...
近几年由于喜欢生物学相关学科的学生越来越多，USABO 美国生物奥林匹克学术活动（USA Biology Olympiad）、BBO英国生物奥林匹克学术活动（British Biology Olympiad）以及BrainBee脑科学大赛 几乎已经成为想要申...
由剑桥大学经济学会举办 一次参赛即可get：扎实的经济学理论知识 强大的逻辑论证能力 专业严谨的学术写作能力 ... 马歇尔学会经济论文比赛 Marshall Society Essay Competition 公布2022年赛事题目啦！2022马歇尔...
BPhO英国物理奥赛 始于1979年，1983年正式为英国选拔国家代表队参与国际物理学术活动。该学术活动也被称为牛剑物理工程学子标配赛。英国物理奥赛非常注重物理知识的灵活运用，全部的试题为证明题。同学们需要运用...
USACO 2021 February Contest, Gold Problem 2. Modern Art 3 Having become bored with standard 2-dimensional artwork (and also frustrated at others copying her work), the great bovine artist Picowso h...
USACO 2021 February Contest, Gold Problem 1. Stone Game Bessie and Elsie are playing a game with NN (1≤N≤1051≤N≤105) piles of stones, where the ii-th pile has aiai stones for each 1≤i≤N1≤i≤N (1≤ai≤...
USACO 2021 February Contest, Platinum Problem 3. Counting Graphs Bessie has a connected, undirected graph GG with NN vertices labeled 1…N1…N and MM edges (2≤N≤102,N−1≤M≤N2+N22≤N≤102,N−1≤M≤N2+N2). G...
USACO 2021 February Contest, Platinum Problem 2. Minimizing Edges Bessie has a connected, undirected graph GG with NN vertices labeled 1…N1…N and MM edges (2≤N≤105,N−1≤M≤N2+N22≤N≤105,N−1≤M≤N2+N2). ...
USACO 2021 US Open, Platinum Problem 3. Balanced Subsets Farmer John's pasture can be regarded as a large 2D grid of square "cells" (picture a huge chessboard) labeled by the ordered pairs (i,j)(i,...
