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10183.cpp
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10183.cpp
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#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#define N 2001
#define M 1002
int compa(char *a,char *b)
{
int i;
for (i=0;a[i]!='\0';i++)
if (a[i]>b[i]) return 1;
else if (a[i]<b[i]) return 2;
return 0;
}
int add(char table[][M],char *temp,int *length,int no)
{
int i=length[no-2]-1;
int j=length[no-1]-1;
int k;
int carry=0;
for (k=0;i>=0 || j>=0;i--,j--,k++)
{
if (i>=0 && j>=0) carry+=table[no-2][i]-'0'+table[no-1][j]-'0';
else if (i>=0) carry+=table[no-2][i]-'0';
else carry+=table[no-1][j]-'0';
temp[k]=carry%10+'0';
carry/=10;
}
if (carry) temp[k++]=carry+'0';
length[no]=k;
for (i=k-1,j=0;i>=0;i--,j++)
table[no][j]=temp[i];
table[no][j]='\0';
}
void initial(char table[][M],char *temp,int *length)
{
int i;
table[0][0]='0',table[0][1]='\0',length[0]=1;
table[1][0]='1',table[1][1]='\0',length[1]=1;
table[2][0]='1',table[2][1]='\0',length[2]=1;
for (i=3;i<N;i++)
add(table,temp,length,i);
}
main()
{
int key;
char table[N][M];
char temp[M];
int length[N];
char a[M],b[M];
int counter;
int length1,length2;
int i;
initial(table,temp,length);
while (cin>>a>>b && a[0]!='0' || b[0]!='0')
{
counter=0;
for (i=0;a[i]!='\0';i++);
length1=i;
for (i=0;b[i]!='\0';i++);
length2=i;
for (i=2;i<N;i++)
if (length[i]>=length1)
{
if (length[i]==length1)
{
if (compa(table[i],a)==0 || compa(table[i],a)==1) break;
}
else break;
}
counter=i;
for (;i<N;i++)
if (length[i]>=length2)
{
if (length[i]==length2)
{
if (compa(table[i],b)==1) break;
}
else break;
}
cout<<i-counter<<endl;
}
return 0;
}