#include<cstdio>
#include<iostream>
using namespace std;
bool e;
int scan_d()
{
    e=false;
    int ip=getc(stdin),ret=0;
    for(;ip<'0'||ip>'9';ip=getc(stdin))
    {
        if(ip==EOF)
        {
            e=true;
            break;
        }
    }
    if(!e)
    {
        for(;ip>='0'&&ip<='9';ip=getc(stdin))
            ret=ret*10+ip-'0';
        return ret;    
    }
}
int main()
{
    while(!e)
    {
        int t=scan_d();
        if(!e)
            cout<<t<<endl;
    }
    if(e)
        cout<<"end of file reached";
}

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