hihoCoder - 1051 - 补提交卡 (枚举,贪心!!) - Never say never - 博客频道 - CSDN.NET


hihoCoder - 1051 - 补提交卡 (枚举,贪心!!) - Never say never - 博客频道 - CSDN.NET
小Ho给自己定了一个宏伟的目标:连续100天每天坚持在hihoCoder上提交一个程序。100天过去了,小Ho查看自己的提交记录发现有N天因为贪玩忘记提交了。于是小Ho软磨硬泡、强忍着小Hi鄙视的眼神从小Hi那里要来M张"补提交卡"。每张"补提交卡"都可以补回一天的提交,将原本没有提交程序的一天变成有提交程序的一天。小Ho想知道通过利用这M张补提交卡,可以使自己的"最长连续提交天数"最多变成多少天。

输入

第一行是一个整数T(1 <= T <= 10),代表测试数据的组数。
每个测试数据第一行是2个整数N和M(0 <= N, M <= 100)。第二行包含N个整数a1, a2, ... aN(1 <= a1 < a2 < ... < aN <= 100),表示第a1, a2, ...  aN天小Ho没有提交程序。

输出

对于每组数据,输出通过使用补提交卡小Ho的最长连续提交天数最多变成多少。
样例输入
3   5 1   34 77 82 83 84   5 2   10 30 55 56 90   5 10   10 30 55 56 90
样例输出
76   59 100
思路:简单枚举,首先先肯定一件事,只有将连续的几个未提交全部都变为已提交,然后扫一遍期间贪心一下才可以得到最大连续时间
http://www.cnblogs.com/nowandforever/p/4415543.html
既然要选择最长连续提交天数,那么提交卡必须连续使用才有可能得到最优解,这样贪心,然后从头到尾扫一遍求出最大值。
5 1   数组为a[i] 下标从1开始。
34 77 82 83 84   假如 提交卡用在 第一个数那么连续提交天数变成 a[2]-a[0]-1,第二个数 a[3]-a[1]-1,以此类推。
 4 int main()
 5 {
 6     int t,n,m;
 7     scanf("%d",&t);
 8     while(t--)
 9     {
10         scanf("%d%d",&n,&m);
11         for(int i=1;i<=n;i++) scanf("%d",&a[i]);
12         if(m>=n) {printf("100\n");continue;}
13         int max=0;
14         for(int i=m+1;i<=n;i++)
15         {
16             if(a[i]-a[i-m-1]-1>max)
17                 max=a[i]-a[i-m-1]-1;
18         }
19         printf("%d\n",max);
20     }
21     return 0;
22 }
Read full article from hihoCoder - 1051 - 补提交卡 (枚举,贪心!!) - Never say never - 博客频道 - CSDN.NET

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