原创 #640(Div.4)E. Special Elements（前綴和）
題目描述 Pay attention to the non-standard memory limit in this problem. In order to cut off efficient solutions from
2020-05-12 18:59:55
原创 1 10 100 1000(map的應用)
題目描述 1,10,100,1000…組成序列1101001000…，求這個序列的第N位是0還是1。 Input 第1行：一個數T，表示後面用作輸入測試的數的數量。（1 <= T <= 10000) 第2 - T + 1行：
2020-05-12 18:59:55
原创 #640(Div.4)F. Binary String Reconstruction(找規律+構造)
題目描述 For some binary string s (i.e. each character si is either ‘0’ or ‘1’), all pairs of consecutive (adjacent) c
2020-05-12 18:59:55
原创 #640(Div.4)G. Special Permutation（找規律+構造）
題目描述 A permutation of length n is an array p=[p1,p2,…,pn], which contains every integer from 1 to n (inclusive) an
2020-05-12 18:59:55
原创 #640(Div.4)C. K-th Not Divisible by n（數學）
題目描述 You are given two positive integers n and k. Print the k-th positive integer that is not divisible by n. For
2020-05-12 18:59:55
原创 #640(Div.4)D. Alice, Bob and Candies(模擬)
題目描述 There are n candies in a row, they are numbered from left to right from 1 to n. The size of the i-th candy is
2020-05-12 18:59:55
原创 #639 (Div. 2)B. Card Constructions
題目描述： A card pyramid of height 1 is constructed by resting two cards against each other. For h>1, a card pyramid o
2020-05-08 01:38:15
原创 #639 (Div. 2)C. Hilbert's Hotel
題目描述： Hilbert’s Hotel is a very unusual hotel since the number of rooms is infinite! In fact, there is exactly one
2020-05-08 01:38:15
原创 #639 (Div. 2)D. Monopole Magnets（連通塊）
題目描述 A monopole magnet is a magnet that only has one pole, either north or south. They don’t actually exist since
2020-05-08 01:38:15
原创 #639 (Div. 2)A. Puzzle Pieces
題目描述 You are given a special jigsaw puzzle consisting of n⋅m identical pieces. Every piece has three tabs and one
2020-05-08 01:38:15
原创 #638 (Div. 2)A. Phoenix and Balance(找規律+遞推)
Phoenix has n coins with weights 21,22,…,2n. He knows that n is even. He wants to split the coins into two piles s
2020-05-03 13:50:08
原创 #638 (Div. 2)C. Phoenix and Distribution（分類討論）
Phoenix has a string s consisting of lowercase Latin letters. He wants to distribute all the letters of his string
2020-05-03 13:50:08
原创 #638 (Div. 2)D. Phoenix and Science(貪心)
Phoenix has decided to become a scientist! He is currently investigating the growth of bacteria. Initially, on day
2020-05-03 13:50:08
原创 #638 (Div. 2)B. Phoenix and Beauty(思維)
Phoenix loves beautiful arrays. An array is beautiful if all its subarrays of length k have the same sum. A subarr
2020-05-03 13:50:08
原创 1342C. Yet Another Counting Problem(找規律+前綴和)
You are given two integers a and b, and q queries. The i-th query consists of two numbers li and ri, and the answe
2020-04-28 12:15:41