zoukankan      html  css  js  c++  java
  • CF758C Unfair Poll

    题意:

    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:

    1. the maximum number of questions a particular pupil is asked,
    2. the minimum number of questions a particular pupil is asked,
    3. 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.

    Input

    The first and the only line contains five integers nmkx and y (1 ≤ n, m ≤ 100, 1 ≤ k ≤ 1018, 1 ≤ x ≤ n, 1 ≤ y ≤ m).

    Output

    Print three integers:

    1. the maximum number of questions a particular pupil is asked,
    2. the minimum number of questions a particular pupil is asked,
    3. how many times the teacher asked Sergei.
    Examples
    input
    1 3 8 1 1
    output
    3 2 3
    input
    4 2 9 4 2
    output
    2 1 1
    input
    5 5 25 4 3
    output
    1 1 1
    input
    100 100 1000000000000000000 100 100
    output
    101010101010101 50505050505051 50505050505051

    思路:

    模拟。

    实现:

     1 #include <iostream>
     2 #include <cstdio>
     3 using namespace std;
     4 typedef long long ll;
     5 ll n, m, k, x, y, maxn, minn, t;
     6 int main()
     7 {
     8     cin >> n >> m >> k >> x >> y;
     9     if (n == 1)
    10     {
    11         maxn = k / m + (k % m ? 1 : 0);
    12         minn = k / m;
    13         t = y > k % m ? minn : maxn;
    14         cout << maxn << " " << minn << " " << t << endl;
    15     }
    16     else
    17     {
    18         ll t = (2 * n - 2) * m;
    19         ll tmp = k / t;
    20         ll rem = k % t;
    21         maxn = n > 2 ? 2 * tmp : tmp, minn = tmp;
    22         t = (x == 1 || x == n) ? minn : maxn;
    23         if (rem)
    24         {
    25             if (rem > n * m)
    26             {
    27                 maxn += 2;
    28                 minn++;
    29                 ll p = (rem - n * m) / m;
    30                 ll q = (rem - n * m) % m;
    31                 ll nx = n - 1 - p;
    32                 ll ny = q;
    33                 if (ny == 0)
    34                 {
    35                     nx++;
    36                     ny = m;
    37                 }
    38                 if (x < nx || x == nx && y > ny || x == n)
    39                 {
    40                     t++;
    41                 }
    42                 else
    43                 {
    44                     t += 2;
    45                 }
    46             }
    47             else if (rem == n * m)
    48             {
    49                 maxn++;
    50                 minn++;
    51                 t++;
    52             }
    53             else
    54             {
    55                 if (rem > m)
    56                     maxn++;
    57                 else if (maxn == minn)
    58                     maxn++;
    59                 ll nx = rem / m;
    60                 ll ny = rem % m;
    61                 if (ny)
    62                 {
    63                     nx++;
    64                 }
    65                 else
    66                 {
    67                     ny = m;
    68                 }
    69                 if (!(x > nx || x == nx && y > ny))
    70                 {
    71                     t++;
    72                 }
    73             }
    74         }
    75         cout << maxn << " " << minn << " " << t << endl;
    76     }
    77     return 0;
    78 }
  • 相关阅读:
    js~this的陷阱
    freemarker导出word带图片
    ok6410 u-boot-2012.04.01移植七完善u-boot移植(u-boot移植结束)
    一些编程上的小技巧
    while循环
    AIX 中以并发模式挂载vg
    老鸟的Python入门教程
    Ubuntu12.10 下搭建基于KVM-QEMU的虚拟机环境(十三)
    java中线程机制
    [置顶] 程序员求职攻略(《程序员面试笔试宝典》)之计算机相关专业读研究生还是直接就业?
  • 原文地址:https://www.cnblogs.com/wangyiming/p/6387636.html
Copyright © 2011-2022 走看看