#include<iostream>
#include<vector>
using namespace std;
int main() {
	int a;
	cin >> a;
	int b = 1;
	int c = a;
	for (;c>=1000;) {
		c /= 1000;
		b++;
	}
	vector<int> d(b);
	for (int i = 0; i < b; i++) {
		d[i] = a % 1000;
		a /= 1000;
	}
	for (int i = b-1; i >= 1; i--) {
		if (i!=b-1&&d[i] < 10) {
			cout << "00" << d[i] << ",";
		}else if (i != b - 1&&d[i] < 100) {
			cout << 0 << d[i] << ",";
		}else {
			cout << d[i] << ",";
		}
	}
	if (b-1!=0&&d[0] < 10) {
		cout << "00" << d[0] ;
	}
	else if (b-1!=0&&d[0] < 100) {
		cout << 0 << d[0];
	}
	else {
		cout << d[0]<<endl;
	}
}