题目链接:https://codeforces.com/contest/1265/problem/C题意从大到小给出 $n$ 只队伍的过题数,要颁发 $g$ 枚金牌,$s$ 枚银牌,$b$ 枚铜牌,要求:$g < s, g < b$$g + s + d \le \lfloor \frac{n}{2} \rfloor$金牌队伍的过题数大于银牌,银牌队伍的过题数大于铜牌输出颁发奖牌数最多的一种方案。题解根据第三个要求,奖牌一定是按过题数的大小颁发的。金牌只颁发给过题最多数的队伍,可以使 $g < s, g < b$ 最容易满足。接下来...
N (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating in a programming contest. As we all know, some cows code better than others. Each cow has a certain constant skill rating that is unique among the competitors. The contest is conducted in several head-to-head rounds, each between two cows. If cow A has a greater skill level than cow B (1 ≤ A ≤ N; 1 ≤ B ≤ N; A ≠ B), then cow...
这道题终于把离散数学学到的Warshall算法用上了,好开心;所以比赛是最好的知识使用场; 这道题根据题意可以知道,A wins B ,Bwins C就可以知道A wins C所以这很明显就是传递闭包,然后最后去求位置确定的个数,那么得到确定位置的个数那么就必须知道这点:如果A 赢了x头牛,输给了y头牛,那么如果A的位置确定就应该有x+y==n-1; 所以最后利用Warshall算法求出传递闭包然后各自扫一遍就出来答案了: #include<bits/stdc++.h> usin...
问题 G: 例题5-7 求圆周率pi的近似值 题目描述 用如下公式pi/4=1-1/3+1/5-1/7...*/ 求圆周率PI的近似值,直到发现某一项的绝对值小于10-6为止(该项不累加)。 要求输出的结果总宽度占10位,其中小数部分为8位。 程序中使用浮点型数据时,请定义为双精度double类型。 如果需要计算绝对值,可以使用C语言数学库提供的函数fabs,如求x的绝对值,则为fabs(x). 输入 无 输出 PI=圆周率的近似值 输出的结果总宽度占10位,其中小数部分为...
问题 F: 例题5-6 矩阵输出 题目描述 输出以下4*5的矩阵 1 2 3 4 5 2 4 6 8 10 3 6 9 12 15 4 8 12 16 20 要求使用循环实现,注意每行输出5个数字,每个数字占3个字符的宽度,右对齐。 输入 无 输出 每行输出5个数字,每个数字占3个字符的宽度,右对齐。 样例输入无样例输出 1 2 3 4 5 2 4 6 8 10 3 6 9 12 15 4 8 12 16 20 提示: 该题为基本循环结构题,易用两个for循环嵌套实现,注意格式化...
题目描述Noah suggests the following card game: You are given a deck of cards, each with a distinct positive?integer value written on it. The cards are shuf?ed and placed in a row. Your objective is to?arrange the cards in the row so that the values are monotonically increasing initially, and then?monotonically decreasing for the remainder of the sequence.The only move that is allowed is that two n...