UNKNOWN ERROR 诡异错误

#include<bits/stdc++.h>
using namespace std;
struct Long {
  int *s;
  Long() {
    s=new int[5];
    memset(s,0,20);
  }
  ~Long() {
    delete[] s;
  }
  void operator=(const Long &A) {
    delete[] s;
    s=new int[5];
    memcpy(s,A.s,20);
  }
  void read() {
    char ss[10005]={0};
    scanf("%s",ss);
    delete[] s;
    s=new int[5];
    memset(s,0,20);
    for (int i=0;i<5;++i)
      s[i]=ss[4-i]-48;
  }
  void put() {
    for (int i=4;i>=0;--i)
      printf("%d ",s[i]);
    puts("");
  }
  void Change() {
    Long C=*this;
    C.put();
    *this=C;
    put();
  }
};
int main() {
  while (1) {
    Long a,b;
    a.read();
    a.put();
    a.Change();
    a.put();
  }
}