//附上链接:https://acm.sdut.edu.cn/onlinejudge2/index.php/Home/Index/problemdetail/pid/2543.html
//这种题 就是数学上的集合的题 画一下 维恩图 理清关系就ok了,千万别忘了这题看线索提示啊 要不你直接用for循环写 肯定会 超时!!
#include<iostream>
#include<cstdio>
#include<string.h>
#include<algorithm>
#include<stdlib.h>
#include<cmath>
using namespace std;
int main()
{
int n,count,i,a1,a2,a3,a4,a5,a6,a7,a8;
while (scanf("%d", &n) != EOF)
{
a1 = n / 5;
a2 = n / 6;
a3 = n / 8;
a4 = n / 30;
a5 = n / 40;
a6 = n / 24;
a7 = n / 120;
cout << a1 + (a3 - a5) + (a2 - a4 - (a6 - a7)) << endl;
}
return 0;
}
整除 2354
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转载自blog.csdn.net/cjava__/article/details/80820231
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