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/*
* 你作为一名出道的歌手终于要出自己的第一份专辑了,
* 你计划收录 n 首歌而且每首歌的长度都是 s 秒,
* 每首歌必须完整地收录于一张 CD 当中。每张 CD 的容量长度都是 L 秒,
* 而且你至少得保证同一张 CD 内相邻两首歌中间至少要隔 1 秒。
* 为了辟邪,你决定任意一张 CD 内的歌数不能被 13 这个数字整除,
* 那么请问你出这张专辑至少需要多少张 CD ?
* 输入描述:
* 每组测试用例仅包含一组数据,每组数据第一行为三个正整数 n, s, L。
* 保证 n ≤ 100 , s ≤ L ≤ 10000
*/
#include <stdio.h>
int num(int n, int s, int l)
{
int NumOfEachCD = l / (s + 1);
int sum;
if (n < 0 || s < 0 || l <= 0)
return -1;
if (NumOfEachCD % 13 == 0)
NumOfEachCD--;
sum = n / NumOfEachCD;
if (n % NumOfEachCD != 0)
sum++;
return sum;
}
int main()
{
int ret = num(7, 2, 6);
printf("%d\n", ret);
return 0;
}
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