1084766508 2011-12-07 05:59:00
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#include<stdio.h>
long long int f[2009];
main()
{int i,j,k,n,m;
for(i=1;i<=2000;i++)
f[i]=1;
scanf("%d",&n);
for(i=2;i<=2000;i++)
for(j=1;j<=i/2;j++)
f[i]+=f[j];
printf("%d ",f[n]);
return 0;
}