zcmu-2269: Double Cola(找規律)
2269: Double Cola
Time Limit: 2 Sec Memory Limit: 256 MB Submit: 34 Solved: 26 [Submit][Status][Web Board]
Description
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
Sheldon, Leonard, Penny, Rajesh and Howard are in the queue for a "Double Cola" drink vending machine; there are no other people in the queue. The first one in the queue (Sheldon) buys a can, drinks it and doubles! The resulting two Sheldons go to the end of the queue. Then the next in the queue (Leonard) buys a can, drinks it and gets to the end of the queue as two Leonards, and so on. This process continues ad infinitum.
For example, Penny drinks the third can of cola and the queue will look like this: Rajesh, Howard, Sheldon, Sheldon, Leonard, Leonard, Penny, Penny.
Write a program that will print the name of a man who will drink the n-th can.
Note that in the very beginning the queue looks like that: Sheldon, Leonard, Penny, Rajesh, Howard. The first person is Sheldon.
Input
The input data consist of a single integer n (1≤n≤109).
It is guaranteed that the pretests check the spelling of all the five names, that is, that they contain all the five possible answers.
Output
Print the single line − the name of the person who drinks the n-th can of cola. The cans are numbered starting from 1. Please note that you should spell the names like this: "Sheldon", "Leonard", "Penny", "Rajesh", "Howard" (without the quotes). In that order precisely the friends are in the queue initially.
Examples
Input
1Output
SheldonInput
6Output
SheldonInput
1802Output
Penny
找下規律可以發現隊伍改變是有規律的,用abcde代表5個人:
隊伍變化:abcde -> aabbccddee -> aaaabbbcccdddeee -> aaaaaaaabbbbbbbbccccccccddddddddeeeeeeee ...
單個人的人數變化:1 -> 2-> 4 -> 8 ...(each_cnt每次都*2)
隊伍總人數變化:5個 -> 10個 -> 20個 -> 40個(sum也是每次都*2)
如果沒整明白的話可以自己帶個數進去算一下
#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
char nm[10][10] = {"Sheldon", "Leonard", "Penny", "Rajesh", "Howard" };
int main()
{
int n,sum = 5,each_cnt = 1,res;
scanf("%d",&n);
while(n > sum)
{
n -= sum;
each_cnt *= 2;
sum *= 2;
}
if(n % each_cnt == 0) res = n / each_cnt;
else res = n / each_cnt + 1;
switch(res)
{
case 1:puts(nm[0]);break;
case 2:puts(nm[1]);break;
case 3:puts(nm[2]);break;
case 4:puts(nm[3]);break;
case 5:puts(nm[4]);break;
}
return 0;
}