Problem C
田忌赛马(tian ji racing)
时限:1000ms 内存限制:10000K 总时限:3000ms
描述:
田忌与齐王赛马,双方各有n匹马参赛(n<=100),每场比赛赌注为1两黄金,现已知齐王与田忌的每匹马的速度,并且齐王肯定是按马的速度从快到慢出场,现要你写一个程序帮助田忌计算他最好的结果是赢多少两黄金(输用负数表示)。
Tian Ji and the king play horse racing, both sides have n horse (n is no more the 100), every game a bet of 1 gold, now known king and Tian Ji each horse's speed, and the king is definitely on the horse speed from fast to slow, we want you to write a program to help Tian Ji his best result is win the number gold (lost express with the negative number).
输入:
多个测例。
每个测例三行:第一行一个整数n,表示双方各有n匹马;第二行n个整数分别表示田忌的n匹马的速度;第三行n个整数分别表示齐王的n匹马的速度。
n=0表示输入结束。
A plurality of test cases.
Each test case of three lines: the first line contains an integer n, said the two sides each have n horse; second lines of N integers n Tian Ji horse speed; third lines of N integers King n horse speed.
N = 0 indicates the end of input.
输出:
每行一个整数,田忌最多能赢多少两黄金。
how many gold the tian ji win
输入样例:
3
92 83 71
95 87 74
2
20 20
20 20
2
20 19
22 18
3
20 20 10
20 20 10
0
输出样例:
1
0
0
0
借鉴:https://www.cnblogs.com/anderson0/archive/2011/05/07/2039971.html
#include<iostream>
#include<algorithm>
using namespace std;
bool cmp(int a,int b)
{
return a>b;
}
//平行四边形的处理方法:
/*
kquick=tquick=0;
kslow=tslow=n-1;
类似队列的处理结构
*/
int main()
{
int i,j,h,n,king[1005],tianji[1005],kquick,kslow,tquick,tslow,total;
while(cin>>n,n)
{
total=0;
for(i=0;i<n;i++)
cin>>tianji[i];
for(i=0;i<n;i++)
cin>>king[i];
sort(king,king+n,cmp);
sort(tianji,tianji+n,cmp);
kquick=tquick=0;
kslow=tslow=n-1;
for(i=0;i<n;i++)
{
//当田忌最快的马比国王最快的马快时 用田忌最快的马跟国王最快的马比
if(tianji[tquick]>king[kquick])
{
total+=1;
kquick++;
tquick++;
}
//当田忌最快的马比国王最快的马慢时 用田忌最慢的马跟国王最快的马比
else if(tianji[tquick]<king[kquick])
{
total-=1;
tslow--;
kquick++;
}
else//当田忌最快的马比国王最快的马一样快时
{
for(j=tslow,h=kslow;j>=tquick;j--,h--)
{
if(tianji[j]>king[h])//当田忌最慢的马比国王最慢的马快时 用田忌最慢的马跟国王最慢的马比
{
total+=1;
tslow--;
kslow--;
}
else //用田忌最慢的马跟国王最快的马比
{
if(tianji[j]<king[i])
{
total-=1;
tslow--;
kquick++;
}
tslow=--j;
kslow=h;
break;
}
}
}
if(tquick>tslow) //因为for里比较的次数没法和n连系上,所以在加个外加条件
break;
}
cout<<total<<endl;
}
return 0;
}