int main()
{
int i,n,a[54],sum = 0,max = 0;;
scanf("%d ",& ampn);
for(I = 0;我& ltn;i++)
scanf("%d ",& ampa[I]);
sum = a[I]+a[(I+1)% n]+a[(I+2)% n]+a[(I+3)% n];
if(sum & gt;max)max = sum;
}
printf("%d\n ",max);
返回0;