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  • hdu 5417 Victor and Machine

    Problem Description
    Victor has a machine. When the machine starts up, it will pop out a ball immediately. After that, the machine will pop out a ball every w seconds. However, the machine has some flaws, every time after x seconds of process the machine has to turn off for y seconds for maintenance work. At the second the machine will be shut down, it may pop out a ball. And while it's off, the machine will pop out no ball before the machine restart.
    Now, at the 0 second, the machine opens for the first time. Victor wants to know when the n-th ball will be popped out. Could you tell him?
     
    Input
    The input contains several test cases, at most 100 cases.
    Each line has four integers x, y, w and n. Their meanings are shown above。
    1x,y,w,n100.
     
    Output
    For each test case, you should output a line contains a number indicates the time when the n-th ball will be popped out.
     
    Sample Input
    2 3 3 3
    98 76 54 32
    10 9 8 100
     
    Sample Output
    10
    2664
    939

      题意:一台机器每W分钟吐出一个球,但是它每隔x分要停y分钟。它每次开始时要吐出一个球。求吐出第n个球的时间。

     我们先算每x分钟能吐出多少个球,用n除每分钟吐出的球,就能知道机器要停机次,然后就简单了。

      

     1 #include<cstdio>
     2 #include<cstring>
     3 using namespace std;
     4 int main()
     5 {
     6     int n,w,x,y,ans,t;
     7     while (~scanf("%d%d%d%d",&x,&y,&w,&n))
     8     {
     9         t=x/w+1;
    10         if (n%t==0)
    11         {
    12             ans=(n/t-1)*(x+y);
    13             ans+=(t-1)*w;
    14         }
    15         else
    16         {
    17             ans=(n/t)*(x+y);
    18             ans+=(n%t-1)*w;
    19         }
    20         printf("%d
    ",ans);
    21     }
    22 }
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  • 原文地址:https://www.cnblogs.com/pblr/p/4751248.html
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