记录编号	123593	评测结果	AAAAAAAAAA
题目名称	摩托车游戏	最终得分	100
用户昵称	HouJikan	是否通过	通过
代码语言	C++	运行时间	0.014 s
提交时间	2014-09-28 10:53:36	内存使用	0.32 MiB

#include <iostream>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <queue>
#include <stack>
#include <map>
#include <set>
#include <list>
#include <vector>
#include <ctime>
#include <iterator>
#include <functional>
#define pritnf printf
#define scafn scanf
#define For(i,j,k) for(int i=(j);i<=(k);(i)++)
using namespace std;
typedef long long LL;
typedef unsigned int Uint; 
const int INF=0x7ffffff;
//==============struct declaration==============

//==============var declaration=================
const int MAXN=1010;
double f[MAXN];
int S;
double T;
//==============function declaration============
double Time(int s,int e);
//==============main code=======================
int main()
{  
  string FileName="carz";//程序名 
  string FloderName="COGS";//文件夹名 
  freopen((FileName+".in").c_str(),"r",stdin);
  freopen((FileName+".out").c_str(),"w",stdout);
#ifdef DEBUG  
  system(("cp C:\\Users\\Administrator\\Desktop\\"+FloderName+"\\standard.cpp C:\\Users\\Administrator\\Desktop\\"+FloderName+"\\submit.txt").c_str());
  clock_t Start_Time=clock();
#endif    
  ios::sync_with_stdio(false);
  cin>>S>>T;S/=10;T/=60;
  f[0]=0;
  For(i,1,S){
    f[i]=Time(0,i);
    For(j,1,i-1){
      f[i]=min(f[i],f[j]+Time(j,i)+T);
    }
  }
  printf("%.2lf\n",f[S]);
#ifdef DEBUG  
  clock_t End_Time=clock();
  printf("\n\nTime Used: %.4lf Ms\n",double(End_Time-Start_Time)/CLOCKS_PER_SEC);
#endif    
  return 0;
}
//================fuction code====================
double Time(int s,int e)
{
  double res=0;
  double oil=(e-s)*10;
  if (oil>40)
    return oil/70;
  if (oil>30)
    return oil/75;
  if (oil>20)
    return oil/80;
  if (oil>10)
    return oil/90;
  return oil/100;
}