标签：des blog http io ar os sp for strong
| Time Limit: 1000MS | Memory Limit: 10000K | |
| Total Submissions: 103896 | Accepted: 50542 |
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)
这是我做的第二道水题,还有点小怀念
#include <iostream>
double tc;
double sum[300];
using namespace std;
int main(){
ios::sync_with_stdio(false);
double s=0;
for(int i=0;i<300;i++){
s+=1.00/(i+2);
sum[i]=s;
}
while(cin>>tc&&tc){
int i=0;
for(int i=0;i<300;i++){
if(sum[i]>=tc){
cout<<i+1<<" card(s)"<<endl;
break;
}
}
if(i==300)cout<<"ERROR"<<endl;
}
return 0;
}
标签：des blog http io ar os sp for strong
原文地址：http://www.cnblogs.com/xuesu/p/4106228.html
