[BZOJ1024][SCOI2009]生日快乐 搜索

题目链接：http://www.lydsy.com/JudgeOnline/problem.php?id=1024

直接xjb搜索。

 1 #include<cstdio>
 2 #include<cstring>
 3 #include<algorithm>
 4 using namespace std;
 5 double s;
 6 double dfs(double x,double y,int k){
 7     if(k==1) return x>y?(x/y):(y/x);
 8     double ret=2333333,nx=x/k,ny=y/k;
 9     for(int i=1;i<=(k>>1);i++){
10         ret=min(max(dfs(nx*i,y,i),dfs(x-nx*i,y,k-i)),ret);
11         if(x!=y) ret=min(max(dfs(x,ny*i,i),dfs(x,y-ny*i,k-i)),ret);
12     }
13     return ret;
14 }
15 int main(){
16     double x,y;
17     int n;
18     scanf("%lf%lf%d",&x,&y,&n);
19     s=x*y/n;
20     printf("%lf\n",dfs(x,y,n));
21     return 0;
22 }

 

posted @ 2017-09-06 21:13  halfrot  阅读(122)  评论(0)  编辑  收藏  举报