#include<iostream.h>
class hugeint
{
public:
    hugeint(int);
    hugeint(long);
    ~hugeint();
    hugeint& operator = (char*);
    friend ostream& operator << (ostream&,hugeint&);
protected:
    int *data;
    long size;
};



#include<string.h>
#include<iomanip.h>
#include "hugeint.h"
hugeint::hugeint(int n)
{
    size=(long)n/4;
    data=new int[size];
    for(long i=0;i<size;++i)data[i]=0;
}
hugeint::hugeint(long n)
{
    size=n/4;
    data=new int[size];
    for(long i=0;i<size;++i)data[i]=0;
}
hugeint::~hugeint()
{
    delete[]data;
}
hugeint& hugeint::operator = (char *str)
{
    long len=strlen(str),count=0;
    if(len>(size<<2))return *this;
    char *p=str+len-1;
    int t,i;
    while(1)
    {
        if((p-str)<4)break;
        t=0;
        char *ph=p-3;
        for(int i=0;i<4;++i)
        {
            t*=10;
            t+=ph[i]-'0';
        }
        data[count++]=t;
        p-=4;
    }
    t=0;
    for(i=0;i<=p-str;++i)
    {
        t*=10;
        t+=str[i]-'0';
    }
    data[count]=t;
    return *this;
}
ostream& operator <<(ostream& out,hugeint& a)
{
    int *p=a.data+a.size-1;
    while(!*p)--p;
    out<<*p--;
    while(p>(a.data-1))
        out<<setw(4)<<setfill('0')<<*p--;
    return out;
}




#include "hugeint.h"
void main()
{
    hugeint a(1000);
    a="451234567864512164800012300000000";
    cout<<a<<endl;
}