原创 線段樹的區間更新
看了一上午線段樹的區間更新，總算有點眉目了。這裏放幾篇文章的鏈接，感覺講得是很好的： http://blog.csdn.net/sdjzping/article/details/19542103 http://blog.csdn.net/
2020-06-28 21:08:29
原创 lightoj 1030 Discovering Gold 概率dp
題目： You are in a cave, a long cave! The cave can be represented by a 1 x N grid. Each cell of the cave can contain an
2020-06-28 20:13:58
原创 codeforce 796C Bank Hacking 智力題orz
題目： There are n banks, numbered from 1 to n. There are also n - 1 wires connecting the banks. All banks are initial
2020-06-28 20:13:58
原创 Codeforces Round #415 (Div. 2) C. Do you want a date? 數學
題目： C. Do you want a date? time limit per test 2 seconds memory limit per test 256 megabytes input standar
2020-06-01 10:42:19
原创 codeforce #401 div2 Alyona and Spreadsheet 思維題
題目： C. Alyona and Spreadsheet time limit per test 1 second memory limit per test 256 megabytes input stand
2020-02-24 12:37:42
原创 lightoj 1027 A Dangerous Maze 期望，玄學
題目： You are in a maze; seeing n doors in front of you in beginning. You can choose any door you like. The probability
2020-02-24 12:37:42
原创 圖論500題
轉載出處：http://blog.csdn.net/ffq5050139/article/details/7832991 =============================以下是最小生成樹+並查集===============
2020-02-24 12:37:42
原创 codforces Codeforces Round #409 div2 C 二分搜索
題目： C. Voltage Keepsake time limit per test 2 seconds memory limit per test 256 megabytes input standard input
2020-02-24 12:37:42
原创 spoj Ada and Queue 模擬+deque
題目鏈接：http://www.spoj.com/problems/ADAQUEUE/ 題意：就是讓你模擬一個雙端隊列的front(),back(),push_back(),push_front(),reverse這些功能。 分析：這題，
2020-02-24 12:37:42
原创 Educational Codeforces Round 20 C 數學
題目： C. Maximal GCD time limit per test 1 second memory limit per test 256 megabytes input standard input outp
2020-02-24 12:37:42
原创 一些常用數據結構的數組實現 不定期更新
循環隊列： 題目鏈接：cf 792B 分析：這個題就是約瑟夫環的變形，考慮到n比較小，可以用隊列模擬。 code： #include<cstdio> const int MAXN=100+5; int Q[MAXN]; int a[MA
2020-02-24 12:37:42
原创 codeforce D. Innokenty and a Football League 貪心,模擬
題目： Innokenty is a president of a new football league in Byteland. The first task he should do is to assign short na
2020-02-24 12:37:42
原创 lightoj1095 Arrange the Numbers 組合數學
題目： Consider this sequence {1, 2, 3 ... N}, as an initial sequence of first N natural numbers. You can rearrange this s
2020-02-24 12:37:42
原创 codeforce771B Bear and Different Names 貪心or思維
題目： B. Bear and Different Names time limit per test 1 second memory limit per test 256 megabytes input standard
2020-02-24 12:37:42
原创 Codeforces Round #400 Molly's Chemicals 前綴和
題目： C. Molly's Chemicals time limit per test 2.5 seconds memory limit per test 512 megabytes input standard inp
2020-02-24 12:37:42