#include <stdio.h>
int main()
{
int su;
int sum=0, cnt=0;
double avg;
while(1){scanf("%d", &su);
if (su >= 100)break;sum += su;
cnt++;
}
avg = (double)sum / cnt;
printf("ÇÕ°è : %dÁ¡ \n", sum);
printf("Æò±Õ : %.1lfÁ¡ \n", avg);
return 0;
}
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