#include <stdio.h>
int main(void) {
int i,a[20],n,b[20]={0},k=0;
for(i=0;i<n;i++)
for(i=0;i<n;i++)
{
b[i]=b[i]+a[i];
}
for(i=0;i<n;i++,k++)
b[i]=b[i]-a[k];
for(i=0;i<n;i++)
return 0;
}
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