#include<bits/stdc++.h>
using namespace std;
int main(){
    sing s,s1,s2;
    cin>>s
	int p=s,find(',')    
    s1=s.substr(0,p)
    s2=s.substr(p+1)
    cout<<s2<<','<<s1;
	return 0;
}

/**************************************************************
	Problem: 1116
	User: suzihang
	Language: C++
	Result: Compile Error
****************************************************************/