#include <stdio.h>
int An(int n)
{
if(n==0)
return 2;
else if(n==1)
return 7;
else if(n==2)
return 18;
else
return An(n-1)+Bn(n-1);
}
int Bn(int n)
{
if(n==0)
return 5;
else if(n==1)
return 11;
else if(n==2)
return 17;
else if(n==3)
return 23;
else
return 6+Bn(n-1);
}
int main(void)
{
int n;
return 0;
}
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