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看看我的#include<iostream>
using namespace std;
void ChangTo(int num)
{
int i=num;
int j;
int n=0;
int lastnum=0;
int f;
while (i)
{
j=i%10;
if (j>4)
{
j-=1;
}
for(int k=0; k<n; k++)
{
j*=9;
}
lastnum+=j;
i/=10;
n++;
}
cout<<num<<": "<<lastnum<<endl;
}
int main()
{
int num;
while(cin>>num)
{
if (!num)
{
break;
}
ChangTo(num);
}
return 1;
}
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