#include<stdio.h>
int main()
{
int i,a[]={2,3,4,5,6},b[5];
for(i=0;i<5;i++)
{
if(i==0)
b[i]=a[i]*a[i+1];
else if(i==4)
b[i]=a[i]*a[i-1];
else
b[i]=a[i-1]*a[i+1];
}
for(i=0;i<5;i++)
}
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