#include<iostream>
#include <cstring>
#include <cstdlib>

using namespace std;

bool is_number(char* str)
{
	int count = strlen(str);
	for(int i = 0;i < (strlen(str));i++)
	{
		if((str[i] >= '0') && (str[i] <= '9'))
		{
			count--;
		}
	}
	if(count == 0) return true;
	else return false;
}



int main()
{
	char str[255];
	cin >> str;


	while (is_number(str) == false)
	{

	    if(!is_number(str)) cout << "no valid,try another one\n";
		cin >> str;
	}

	int num = atoi(str);

	cout << num<<" + 1 = "<<num+1<<endl;

}