aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAr8AAAHxCAIAAADrwUM4AAAgAElEQVR4nO3dLXLjytfH8f8mzLOQYC…

点击打开链接 兄弟郊游问题 时间限制:3000 ms  |  内存限制:65535 KB 难度:2 描述 兄弟俩骑车郊游,弟弟先出发,每分钟X米,M分钟后,哥哥带一条狗出发.以每分钟Y米的速度去追弟弟,而狗则以每分钟Z米的速度向弟弟跑去,追上弟弟后又立即返回,直到哥哥追上弟弟时,狗跑了多少米? 输入 第一行输入一个整数N,表示测试数据的组数(N<100) 每组测试数据占一行,是四个正整数,分别为M,X,Y,Z(数据保证X<Y<Z) 输出 输出狗跑的路径,结果保留小数点后两位. 样例输入…

兄弟郊游问题 时间限制:3000 ms  |  内存限制:65535 KB 难度:2   描述 兄弟俩骑车郊游,弟弟先出发,每分钟X米,M分钟后,哥哥带一条狗出发.以每分钟Y米的速度去追弟弟,而狗则以每分钟Z米的速度向弟弟跑去,追上弟弟后又立即返回,直到哥哥追上弟弟时,狗跑了多少米?   输入 第一行输入一个整数N,表示测试数据的组数(N<100)每组测试数据占一行,是四个正整数,分别为M,X,Y,Z(数据保证X<Y<Z) 输出 输出狗跑的路径,结果保留小数点后两位. 样例输入 1 5…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAr4AAAK1CAIAAAChInrhAAAgAElEQVR4nO3dO3LjutaG4X8Szj0Qxx…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsUAAAIUCAIAAAB9y8bFAAAgAElEQVR4nO3dPW7bTNsG0G8T7r0Qt/…

描述 今天发现了nyoj,如获至宝.准备开刷. 括号配对问题 现在,有一行括号序列,请你检查这行括号是否配对.   输入 第一行输入一个数N(0<N<=100),表示有N组测试数据.后面的N行输入多组输入数据,每组输入数据都是一个字符串S(S的长度小于10000,且S不是空串),测试数据组数少于5组.数据保证S中只含有"[","]","(",")"四种字符 输出 每组输入数据的输出占一行,如果该字符串中所含的括号是…

--------------------------------------------- 这道题有点坑,也怪我总是有点马虎,按照正常人的思维0是表示有水池啊竟然是1表示有水池,最坑的是写反了竟然还能过样例一直以为是自己程序问题review了好多遍.... 图论基础题,染色法即可. AC代码: import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc=new…

-----------------------------------------n-1条边的无向连通图是一棵树,又因为树上两点之间的路径是唯一的,所以解是唯一的.(注意并不一定是二叉树,所以最好采用存储图的方式存储树,我使用的是邻接表)这个时候只需要考虑如何求解两点间的路径呢?遍历就可以了.但是应该如何遍历呢?比较容易想到的办法是分别从每个点计算到S点的路径,既然它们的终点相同,那为什么不逆向一下干脆从S点向这些点出发呢?所以现在问题就转化为了从S点出发遍历树,OK,这个问题就比较简单了,只需…

-------------------------------------祭出BigInteger AC代码: import java.math.BigInteger; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int n=sc.nextInt(); BigInteger ans=fac(n);…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsYAAAK1CAIAAABEvL+NAAAgAElEQVR4nO3drXLkurvv8X0T4bmQYF…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAs8AAANvCAIAAACte6C6AAAgAElEQVR4nOydPbLcNhOu7yaUayGOZy…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAssAAAOTCAIAAADGwNmiAAAgAElEQVR4nOy9PY7cyLPufTchXwsZu9…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAssAAANLCAIAAAA4rUfgAAAgAElEQVR4nOydq7LdyrKm+yXM/SDG4y…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAssAAAJUCAIAAABsWvwaAAAgAElEQVR4nO3dPXLjuraG4TsJ5xqIYw…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAscAAAHuCAIAAAD83zYaAAAgAElEQVR4nO3dP1LjygIv4LcJ5yyE2A…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsEAAAKBCAIAAAA5i+FPAAAgAElEQVR4nO3dPXLbugMv7LsJ916Iay3i3i4eNe68gjRq7Mp9Gs+ofRsXzqRVf4rMpIk7dSn/S9Bb8EMACJIgLDm28zzjOSeWSPBLFn4EQPL/HAAAlvs/f3sFAIAPSYYAAGrIEABADRkCAKghQwAANWQIAKCGDAEA1JAhAIAaMgQAUEOGAABqyBAAQ…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAr4AAAHvCAIAAAA930vtAAAgAElEQVR4nO3dPVLjysIG4G8T5CyE2AsZygkZKyBRYiLySajyCgiYInV+AqomgczZhHcJ+gL9uCV1S93GDD/zPEXdC7Lcaklz3K+6W/L/1QAA2f7voysAAHwlogMAUEB0AAAKiA4AQAHRAQAoIDoAAAVEBwCggOgAABQQHQCAAqIDAFBAdAAACogOA…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAs0AAAIICAIAAAAaCETRAAAgAElEQVR4nO3drW7jWtwv4PcmwnMhxbmQqULKSg8ZEpKiSu9hQyqFHlLQUWn4BpWGtCyscF+CD/DXsr1sr2S6dpv0eRRpWsffGXX98l/L9v8UAAB5/M9n7wAAcLHkDAAgFzkDAMhFzgAAcpEzAIBc5AwAIBc5AwDIRc4AAHKRMwCAXOQMACAXOQMAy…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsEAAAIBCAIAAAAnO/WXAAAgAElEQVR4nO3dq3IbSeM34L0Jc/O9BW…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsMAAAIqCAIAAABOpdBfAAAgAElEQVR4nO3drXLbzP834P9JhOdAgn0gzZiEhT6kRCRB4SWZ8REEpFNqfoPOlDTMrPB3CHqA3nallbTexGniXtd05r5jy3q1tR99d239Xw0AUOr//vYKAACfmCQBAJSTJACAcpIEAFBOkgAAykkSAEA5SQIAKCdJAADlJAkAoJwkAQCUkyQAgHKSB…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsQAAAJhCAIAAADJ5jGJAAAgAElEQVR4nO3dq3LkSPg36O8mzH0hxnUTS75oRxEzgyVLhojYyBG7bIgjiv6JgTuaFlk0oCOGtFmxhnMJ+oBOmanUoZwuH6qfJxwx4ypJpYO78qc3U9L/qgEACvyvj14BAOBrEyYAgCLCBABQRJgAAIoIEwBAEWECACgiTAAARYQJAKCIMAEAFBEmA…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAscAAAJgCAIAAADpjVkvAAAgAElEQVR4nO3du04jS/gv7H0T5FwIsa9jC+SEjGDHkziBCGl/wZZIkJz+EwJGkzpfwUgkQ+ZswrkEf0GfqqqrD4bCGPM8Gmkt7Haf3fXrt8vd/2sHAFDC//rsGQAAToRUAQCUIVUAAGVIFQBAGVIFAFCGVAEAlCFVAABlSBUAQBlSBQBQhlQBAJQhV…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsUAAAHXCAIAAADbX7BCAAAgAElEQVR4nO3dvVLrSMAm4L0Jci6E2B…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAr4AAAInCAIAAADxjM2pAAAgAElEQVR4nO3dPVLjStsG4G8T5CyE2A…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsYAAAI0CAIAAACRUHjwAAAgAElEQVR4nO3dO3LbyroG0DsJ5RqIYg…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsIAAAJhCAIAAADE+EHOAAAgAElEQVR4nO3drXLjSAMu4HMT4bmQYF…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAsAAAAIZCAIAAAAnfB5fAAAgAElEQVR4nO3dO1LjygIG4LsJchZC7IUM5YSMFZA4gYichCqvgICpSZ2fgKpJIHM24SzBN9CrW+qW1Mbm4fm+os4Z27LeUv/qbkv/2wEAFPrfZ88AAPD9CBAAQDEBAgAoJkAAAMUECACgmAABABQTIACAYgIEAFBMgAAAigkQAEAxAQIAKCZAAADFB…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAscAAAJLCAIAAACE5qzaAAAgAElEQVR4nO3dMXKrutvH8XcT6bOQ1CzkZGjSZQWnoXGq9KfJDCtIkTtp6W+RmdsknbtT/pfAW4BAj/Q8krBlJ3G+n7kz98TGIARGP4QM/zcCAADU8H+fXQAAAHAhSBUAAKAOUgUAAKiDVAEAAOogVQAAgDpIFQAAoA5SBQAAqINUAQAA6iBVAACAO…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAr8AAAJ/CAIAAAD+kywNAAAgAElEQVR4nO3dO1LjzN4H4G8T5CyE2AuBckLGCiZxAhE5CVVeAQFTkzp/g6kimcmcTXiW4C/QrbvVLanB3J+n3jpnkGVZN6t/+qst/d8BAKDG/733DAAAn4z0AADUkR4AgDrSAwBQR3oAAOpIDwBAHekBAKgjPQAAdaQHAKCO9ADfzZ9fq5Or05Pr2…

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAscAAAIvCAIAAAAXg+GWAAAgAElEQVR4nO3dO1LryNsH4G8T5CyE2AsZygkZKziJExORT0KVV0DAFKnzCU7VJIfMGeF/CfoCXdwttaSWaW7meepUzWDLstS69E+vZOn/KgCAEv7vsycAADgTUgUAUIZUAQCUIVUAAGVIFQBAGVIFAFCGVAEAlCFVAABlSBUAQBlSBQBQhlQBAJQhV…