[training Day2] torchbearer

Torchbearer

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Their thinking

Direct violence enumeration $01$ Digital string , Violent judgment is enough .（ Non positive solution , But I can pass ）

code

#include<iostream>
#include<cstring>
#include<cstdio>
#define int long long
using namespace std;

int n;
int d[20],tot;

int add(int i)
{
    
	tot=0,i++;
	memset(d,0,sizeof(d));
	int t=0;
	while(i)
	{
    
		d[++tot]+=i%10;
		if(d[tot]==2)
			d[tot+1]=1,d[tot]=0;
		i/=10;
	}
	if(d[tot+1]) tot++;
	for(;tot;tot--) i=i*10+d[tot];
	return i;
}

signed main()
{
    
	cin>>n;
	for(int i=1;i<=1e18;)
	{
    
		if(i%n==0&&i>n)
			return printf("%lld\n",i/n),0;
		i=add(i);
	}
	printf("no solution\n");
}