标签：des style class blog c code
| Time Limit: 1000MS | Memory Limit: 10000K | |
| Total Submissions: 99369 | Accepted: 48162 |
Description
How far can you make a stack of cards overhang a table? If you have one card, you can create a maximum overhang of half a card length. (We‘re assuming that the cards must be perpendicular to the table.) With two cards you can make the top card overhang the bottom one by half a card length, and the bottom one overhang the table by a third of a card length, for a total maximum overhang of 1/2 + 1/3 = 5/6 card lengths. In general you can make n cards overhang by 1/2 + 1/3 + 1/4 + ... + 1/(n + 1) card lengths, where the top card overhangs the second by 1/2, the second overhangs tha third by 1/3, the third overhangs the fourth by 1/4, etc., and the bottom card overhangs the table by 1/(n + 1). This is illustrated in the figure below.
Input
Output
Sample Input
1.00 3.71 0.04 5.19 0.00
Sample Output
3 card(s) 61 card(s) 1 card(s) 273 card(s)
Source
1 #include<iostream> 2 using namespace std; 3 4 int main() 5 { 6 double sum = 0.5; 7 double num[301]={0,0.5}; 8 9 for(int i=2;sum<=5.20;i++) 10 { 11 sum = sum + 1.0/(i+1) ; 12 num[i] = sum; 13 } 14 double n; 15 while(cin>>n) 16 { 17 if(n==0.00) 18 break; 19 for(int i=1;i<301;i++) 20 { 21 if(num[i]>=n) 22 { 23 cout<<i<<" card(s)"<<endl; 24 break; 25 } 26 } 27 } 28 return 0; 29 }
标签：des style class blog c code
原文地址：http://www.cnblogs.com/jhldreams/p/3750656.html
