#include <iostream>
#include <string>
#include <cctype>
 
int main()
{
	std::string s="3983166922118810678205990336564718434224120605664143701183608768141905250787782877719783678679061484962365081537093035923501297045164325783140744700987694957532389158400858116442933576455898753759925348456032608650278150327110180834816760596303097286523605280428429436106445252981359910377930818774855112452474332249873412259136132368731917415053983296042291396691439150433279600306468690306707682489567387757087354859605042563344537364880212053587269055695748062646674865811939840510090971364835065252717494840800357338638708817635670004576509737845399272402043442156827044195038802613229625783142492845706197046207004041551342095347194089863859659283335973442255940429503528960000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
	for(int i=0;i<s.size();i++)
	{
		if(!isdigit(s[i]))
		{
			std::cout<<"non-digit character found!\n";
			goto end;
		}
	}
	std::cout<<"no non-digit characters found!\n";
	end:
	return 0;
}

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