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1031.txt
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1031.txt
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#include <cstdlib>
#include <iostream>
using namespace std;
unsigned long long ebob(unsigned long long a, unsigned long long b)
{
if(b==0)
return a;
else
return ebob(b,a%b);
}
int main(int argc, char *argv[])
{
long long n,i,j,a[10001],b[10001],m=1;
double c[10001];
scanf("%lld",&n);
for(i=1; i<n; i++)
for(j=n; j>=i+1; j--)
if(ebob(i,j)==1)
{
//printf("%d/%d\n",i,j);
a[m]=i;
b[m]=j;
c[m]=(double)i/(double)j;
m++;
}
m--;
for(i=1; i<m; i++)
for(j=1; j<m; j++)
if(c[j]>c[j+1])
{
swap(c[j],c[j+1]);
swap(a[j],a[j+1]);
swap(b[j],b[j+1]);
}
printf("0/1\n");
for(i=1; i<=m; i++)
printf("%lld/%lld\n",a[i],b[i]);
printf("1/1\n");
system("PAUSE");
return EXIT_SUCCESS;
}