备忘

#include<iostream>
using namespace std;

int a[1000];
int waiting = 1;
int main(){
 
 int temp = 0;
 int i = 0;
 while(cin>>temp){
  
  a[temp] = 1;
  if(temp == waiting){
   cout<<waiting;
   for(i = waiting + 1;a[i] == 1;i++){
    cout<<","<<i;
   }
   cout<<endl;
   waiting = i;
  }
 }
 return 0;
}