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Re:虽然还不会做,但这么明显的博弈题怎么网上所有的分类都说是几何题,再也不信网上的分类了

Posted by JiaJunpeng at 2012-12-16 23:36:10 on Problem 2315
In Reply To:Re:虽然还不会做,但这么明显的博弈题怎么网上所有的分类都说是几何题,再也不信网上的分类了 Posted by:JiaJunpeng at 2012-12-16 23:00:31
> 明显主要考博弈论,几何处理只是浮云
猜了个结论G++过了,但C++WA,以下是代码,不知道为神马
Source Code

Problem: 2315  User: JiaJunpeng 
Memory: 700K  Time: 0MS 
Language: G++  Result: Accepted 

Source Code 
#include<iostream>
#include<stdio.h>
#include<algorithm>
#include<cmath>
#include<cstdlib>
#include<cstring>
#include<string>
#include<vector>
using namespace std;
int n,m,l,r,c[33],k;
double dist,pi=acos(-1.00),now,eps=1e-9;
int main()
{
    int i,j,s,p,q;
    while(scanf("%d%d%d%d",&n,&m,&l,&r)==4)
    {
       k=(int)((double)(l+eps)/(2*pi*r));
       for(i=0;i<n;i++)
       {
          scanf("%lf",&dist);
          c[i]=(int)((dist-eps)/(2*pi*r))+1;
          c[i]%=k+1;
       }
       for(i=0;i<31;i++)
       {
          int value=0;
          for(j=0;j<n;j++)
          {
              if(c[j]&(1<<i))
                value++;
          }  
          if(value%(m+1)!=0) 
             break;
       }
       if(i<31)
          puts("Alice");
       else
          puts("Bob");
    }
    return 0;
}


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