【找规律】Codeforces Round #392 (Div. 2) C. Unfair Poll
1 second
256 megabytes
standard input
standard output
On the Literature lesson Sergei noticed an awful injustice, it seems that some students are asked more often than others.
Seating in the class looks like a rectangle, where n rows with m pupils in each.
The teacher asks pupils in the following order: at first, she asks all pupils from the first row in the order of their seating, then she continues to ask pupils from the next row. If the teacher asked the last row, then the direction of the poll changes, it means that she asks the previous row. The order of asking the rows looks as follows: the 1-st row, the 2-nd row, ..., the n - 1-st row, the n-th row, the n - 1-st row, ..., the 2-nd row, the 1-st row, the 2-nd row, ...
The order of asking of pupils on the same row is always the same: the 1-st pupil, the 2-nd pupil, ..., the m-th pupil.
During the lesson the teacher managed to ask exactly k questions from pupils in order described above. Sergei seats on the x-th row, on the y-th place in the row. Sergei decided to prove to the teacher that pupils are asked irregularly, help him count three values:
- the maximum number of questions a particular pupil is asked,
- the minimum number of questions a particular pupil is asked,
- how many times the teacher asked Sergei.
If there is only one row in the class, then the teacher always asks children from this row.
The first and the only line contains five integers n, m, k, x and y (1 ≤ n, m ≤ 100, 1 ≤ k ≤ 1018, 1 ≤ x ≤ n, 1 ≤ y ≤ m).
Print three integers:
- the maximum number of questions a particular pupil is asked,
- the minimum number of questions a particular pupil is asked,
- how many times the teacher asked Sergei.
1 3 8 1 1
3 2 3
4 2 9 4 2
2 1 1
5 5 25 4 3
1 1 1
100 100 1000000000000000000 100 100
101010101010101 50505050505051 50505050505051
The order of asking pupils in the first test:
- the pupil from the first row who seats at the first table, it means it is Sergei;
- the pupil from the first row who seats at the second table;
- the pupil from the first row who seats at the third table;
- the pupil from the first row who seats at the first table, it means it is Sergei;
- the pupil from the first row who seats at the second table;
- the pupil from the first row who seats at the third table;
- the pupil from the first row who seats at the first table, it means it is Sergei;
- the pupil from the first row who seats at the second table;
The order of asking pupils in the second test:
- the pupil from the first row who seats at the first table;
- the pupil from the first row who seats at the second table;
- the pupil from the second row who seats at the first table;
- the pupil from the second row who seats at the second table;
- the pupil from the third row who seats at the first table;
- the pupil from the third row who seats at the second table;
- the pupil from the fourth row who seats at the first table;
- the pupil from the fourth row who seats at the second table, it means it is Sergei;
- the pupil from the third row who seats at the first table;
假设老师从第一行叫到最后一行或者从最后一行叫到第一行是一轮,可以得到式子m(nq-q+1)<=k,由此可以推出q(轮数)的最大值。
剩余的叫的次数就可以暴力了。
#include<cstdio>
#include<algorithm>
using namespace std;
typedef long long ll;
ll K;
int n,m,x,y;
ll ci[110];
int a[110][110];
int main()
{
// freopen("c.in","r",stdin);
scanf("%d%d%I64d%d%d",&n,&m,&K,&x,&y);
if(n==1)
{
if(K%(ll)m==0)
printf("%I64d %I64d %I64d\n",K/(ll)m,K/(ll)m,K/(ll)m);
else
printf("%I64d %I64d %I64d\n",K/(ll)m+1ll,K/(ll)m,(ll)y<=K%(ll)m ? K/(ll)m+1ll : K/(ll)m);
return 0;
}
ll q=(K-(ll)m)/(ll)(m*(n-1));
ll _n=q/2ll;
ll _1=(q-1)/2ll;
for(int i=2;i<n;++i)
ci[i]=q;
ci[1]=q-_1;
ci[n]=q-_n;
int nowx;
if(q%2==1)
nowx=n-1;
else
nowx=2;
int nowy=1;
bool flag;
if(q%2==1)
flag=1;
else
flag=0;
if(q==0)
nowx=1;
for(ll i=(q==0 ? 1ll : (ll)m*((ll)n*q-q+1ll)+1ll);i<=K;++i)
{
++a[nowx][nowy];
if(nowy!=m)
++nowy;
else
{
nowy=1;
if(nowx==n)
{
nowx=n-1;
flag=1;
}
else if(nowx==1)
{
nowx=2;
flag=0;
}
else
{
if(flag)
--nowx;
else
++nowx;
}
}
}
ll maxv=0,minv=1000000000000000001ll;
for(int i=1;i<=n;++i)
for(int j=1;j<=m;++j)
{
maxv=max(maxv,ci[i]+(ll)a[i][j]);
minv=min(minv,ci[i]+(ll)a[i][j]);
}
printf("%I64d %I64d %I64d\n",maxv,minv,ci[x]+(ll)a[x][y]);
return 0;
}
【找规律】Codeforces Round #392 (Div. 2) C. Unfair Poll的更多相关文章
- 找规律 Codeforces Round #309 (Div. 2) A. Kyoya and Photobooks
题目传送门 /* 找规律,水 */ #include <cstdio> #include <iostream> #include <algorithm> #incl ...
- 找规律 Codeforces Round #290 (Div. 2) A. Fox And Snake
题目传送门 /* 水题 找规律输出 */ #include <cstdio> #include <iostream> #include <cstring> #inc ...
- 判素数+找规律 BestCoder Round #51 (div.2) 1001 Zball in Tina Town
题目传送门 /* 题意: 求(n-1)! mod n 数论:没啥意思,打个表能发现规律,但坑点是4时要特判! */ /***************************************** ...
- Codeforces Round #392(div 2) 758D (贪心)
orz 最近被水题卡+FST,各种掉rating 题目大意 一个数s它是n进制的,但是每一位不是用'A','B'....表示的,而是用10,11等等表示的,将它还原成十进制 这种表示方法显然会产生多解 ...
- Codeforces Round #392 (Div. 2) F. Geometrical Progression
原题地址:http://codeforces.com/contest/758/problem/F F. Geometrical Progression time limit per test 4 se ...
- Virtual Codeforces Round #392 (Div. 2)
下午闲来无事开了一场Virtual participation 2h就过了3道水题...又跪了..这只是Div. 2啊!!! 感觉这次直接就是跪在了读题上,T1,T2读题太慢,T3还把题读错了 要是让 ...
- Codeforces Round #392 (Div. 2) - C
题目链接:http://codeforces.com/contest/758/problem/C 题意:给定N*M矩阵的教室,每个位置都有一个学生,Sergei坐在[X,Y],然后老师会问K个问题,对 ...
- Codeforces Round #392 (Div. 2) - B
题目链接:http://codeforces.com/contest/758/problem/B 题意:给定n个点灯的情况,灯只有四种颜色RBGY,然后如果某个灯坏了则用'!'表示,现在要求将坏的灯( ...
- Codeforces Round #392 (Div. 2) - A
题目链接:http://codeforces.com/contest/758/problem/A 题意:给定N个城市的福利,国王现在想让每个城市的福利都一致.问最少需要花多少钱使得N个城市的福利值都一 ...
随机推荐
- 杭电hdu 2089 数位dp
杭州人称那些傻乎乎粘嗒嗒的人为62(音:laoer). 杭州交通管理局经常会扩充一些的士车牌照,新近出来一个好消息,以后上牌照,不再含有不吉利的数字了,这样一来,就可以消除个别的士司机和乘客的心理障碍 ...
- eclipse安装反编译插件jadclipse
下载jadClipse地址: 目的:将一些封装的jar或者sdk可以查看源代码 链接: http://pan.baidu.com/s/1kTN4TPd 提取码: 3fvd 将net.sf.jadcl ...
- 初识 spl_autoload_register
spl_autoload_register 一.首先我们看来自官网的定义 版本要求:php版本为5.1.2+ 说明:注册给定的函数作为__autoload的实现.即自动加载 函数参数说明: bool ...
- Python爬虫学习笔记之爬取新浪微博
import requests from urllib.parse import urlencode from pyquery import PyQuery as pq from pymongo im ...
- rpmdb open failed解决方案
1.前提条件:安装软件包的时候,被我手动终止了(可能出错原因)[root@dhcp yum.repos.d]# yum clean allrpmdb: Thread/process 4541/1406 ...
- [object-c 2.0 程序设计]object-c file handle (二)
// // main.m // cmdTry // // Created by Calos Chen on 2017/8/21. // Copyright © 2017年 Calos Chen. Al ...
- [bzoj1692][Usaco2007 Dec]队列变换——贪心+后缀数组
Brief Description 给定一个数列,您每次可以把数列的最前面的数或最后面的数移动到新数列的开头,使得新数列字典序最小.输出这个新序列. Algorithm Design 首先我们可以使用 ...
- python imageai 对象检测、对象识别
imageai库里面提供了目标识别,其实也可以说是目标检测,和现在很多的收集一样就是物体识别.他可以帮你识别出各种各样生活中遇见的事物.比如猫.狗.车.马.人.电脑.收集等等. 感觉imageai有点 ...
- Linux 之test expr命令
test指令(使用指令man查询) 功能:检查文件类型,值比较. test的各种参数和使用. test EXPRESSION1 –a EXPRESSION2 当表达式1和表达式2同时为真时值为真 te ...
- Django【进阶】中间件
中间件 一.概念 django 中的中间件(middleware),在django中,中间件其实就是一个类,在请求到来和结束后,django会根据自己的规则在合适的时机执行中间件中相应的方法. 其 ...