Hangover(1.4.1)
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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
1.003.710.045.190.00
Sample Output
3 card(s)61 card(s)1 card(s)273 card(s)#include <iostream>#include<cmath>using namespace std;int main(){double n;int i;while(cin>>n&&n!=0.00){double a=0.00;for(i=2;i<10000;i++){a=a+double(1.0/i);if(a>=n)break;}cout<<i-1<<" card(s)"<<endl;}return 0;}
注意要用0.1对double类型进行乘除
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