#include"stdio.h"
void main()
{
int i,ch,a[8];
for(i=0;i<8;i++)
a[i]=0;
while((ch=getchar())!='\n')
if(ch>='0' && ch<='7')
a[ch-'0']++;
for(i=0;i<8;i+=2)
printf("a[%d]=%d\n",i,a[i]);
}
......................