uva 699 The Falling Leaves

https://vjudge.net/problem/UVA-699

#include<cstdio>
#include<cstring>
#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:
",++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("

");
    }
}