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Tufurama CodeForces - 961E 题意：有一部电视剧有n季，每一季有ai集。问有多少对i，j存在第i季第j集也同时存在第j季第i集。 思路：核心问题还是统计对于第i季，你要统计第i行(存在多少数量，要大于i）。 线段树的维护相对而言比较暴力，树状数组的话，一开始全是1，一旦某个数 阅读全文
posted @ 2019-01-21 20:46
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K-th Number POJ - 2104 You are working for Macrohard company in data structures department. After failing your previous task about key insertion you w 阅读全文
posted @ 2019-01-21 19:35
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Disharmony Trees HDU - 3015 One day Sophia finds a very big square. There are n trees in the square. They are all so tall. Sophia is very interesting 阅读全文
posted @ 2019-01-21 19:33
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Xenia and Bit Operations CodeForces - 339D Xenia the beginner programmer has a sequence a, consisting of 2nnon-negative integers: a1, a2, ..., a2n. Xe 阅读全文
posted @ 2019-01-21 19:30
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G - Gasoline Gym - 101908G #include<cstdio> #include<iostream> #include<algorithm> #include<cstring> #include<sstream> #include<cmath> #include<stack> 阅读全文
posted @ 2019-01-21 09:49
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