2022馬歇爾經濟論文賽題公布，IEA全球高中生經濟學論文比賽本月截止！
由劍橋大學經濟學會舉辦 一次參賽即可get：扎實的經濟學理論知識 強大的邏輯論證能力 專業嚴謹的學術寫作能力 ... 馬歇爾學會經濟論文比賽 Marshall?Society?Essay?Competition 公布2022年賽事題目啦！2022馬歇爾...
2022BPhO英國物理奧賽，2022備賽報名倒計時！
BPhO英國物理奧賽 始于1979年，1983年正式為英國選拔國家代表隊參與國際物理學術活動。該學術活動也被稱為牛劍物理工程學子標配賽。英國物理奧賽非常注重物理知識的靈活運用，全部的試題為證明題。同學們需要運用...
USACO 2021 February Contest, Gold Problem 2. Modern Art 3
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
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
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
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
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,...
USACO 2021 February Contest, Platinum Problem 1. No Time to Dry
USACO 2021 February Contest, Platinum Problem 1. No Time to Dry Bessie has recently received a painting set, and she wants to paint the long fence at one end of her pasture. The fence consists of?N...
USACO 2021 January Contest, Bronze Problem 3. Just Stalling
USACO 2021 January Contest, Bronze Problem 3. Just Stalling Farmer John has?NN?cows (1≤N≤201≤N≤20) of heights?a1…aNa1…aN. His barn has?NN?stalls with max height limits?b1…bNb1…bN?(so for example, i...
