#include <stdio.h>

int main(void) 
{
	unsigned long long x;
	scanf("%llu", &x);
	unsigned long long aux = x;
	unsigned long long p = 10;
	int ctr = 0;
	while (x / p != 0)  {
		p *= 10;
		ctr++;
	}
	for (int i = 0; i < ctr; i++) {
		p = p / 10;
		printf("%llu-", x / p);
		x = x % p;
	}
	printf("%llu", aux % 10); 
	return 0;
}