Web题目大意:给你一个 h ∗ w h * w h ∗ w 的棋盘,棋盘上n个黑点,其余的都是白点。 每次你只能向下走或向右走,问从(1,1) 走到 (h,w) 不经过黑点的路径有多少条,答案对 1 e 9 + 7 1e9 + 7 1 e 9 + 7 取模。. 题解: h和w非常大,但黑点最多只有2000个,所以入手点在黑点。 Web[CF559C] Gerald and Giant Chess Question (Dynamic Planning + Combination Mathematics) tags: Mathematics Dynamic planning. The title is great: give a chess board for H * W, only n landsters on the board are black, and other plaids are white. There is a stroke in the upper left corner of the checkerboard, each step can be moved or down, and ...
#cf559c Color Hex
WebThe first line of the input contains three integers: h, w, n — the sides of the board and the number of black cells (1 ≤ h, w ≤ 10 5, 1 ≤ n ≤ 2000). Next n lines contain the description … WebCF559C Gerald and Giant Chess . CF575B . CF575G Run for Beer . CF613D Kingdom and its Cities . CF617E XOR and Favorite Number . CF711D Directed Roads . CF765F Souvenirs . CF786B Legacy . CF802I Fake News (hard) CF817F MEX Queries . CF85E Guard Towers . CF865D Buy Low Sell High . did reagan steal from social security
[Explanations] CF559C C. Gerald and Giant Chess (+ grid road …
WebContribute to PiperBetle/MyCode development by creating an account on GitHub. Web§559c. Powers of officers and employees of Forest Service. For the purposes of sections 559b to 559f of this title, if specifically designated by the Secretary and specially trained, … did reagan start the war on drugs