#include
     
      #include
      
       #define N 80;using namespace std;int sum[200];void dfs(int pos){    int rt;    scanf("%d",&rt);    if(rt==-1) return;    sum[pos]+=rt;    dfs(pos-1); dfs(pos+1);}bool read(){    int rt,pos=N;    scanf("%d",&rt);    if(rt==-1) return false;    memset(sum,0,sizeof(sum));    sum[pos]=rt;    dfs(pos-1); dfs(pos+1);    return true;}int main(){    int T=0;    while(1)    {        if(!read()) return 0;         printf("Case %d:\n",++T);        int i=1;        for(i=1;i<200;i++) if(sum[i]) break;        printf("%d",sum[i]);        for(int j=i+1;sum[j];j++) printf(" %d",sum[j]);        printf("\n\n");    }}