7, or 7

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[Problem Description]
Output [1, N] satisfying the condition of the range of numbers, these numbers are multiples of 7, or 7 comprising a number of, for example, (27, 37 ... 71, 72 ...)

[Enter] form a positive integer N. (N is not greater than 30,000)

[Output] in ascending order form is no greater than about 7 and a positive integer, each row of a N. If such numbers do not exist within the range, any information is not output.

[Sample input]

20

[Sample output]

7
14
17

[DESCRIPTION sample within 20, 7, and 14 is a multiple of 7, 17 7 comprises a digital

#include<iostream>
using namespace std;
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		if(i%7==0||i%10==7||i/10%10==7||i/100%10==7||i/1000%10==7)
		cout<<i<<endl;
	}
	return 0;
 }