倾盆大雨

```6
99999```

```1
24994```

## 代码

``````#include <stdio.h>
int main(){
int n,sum;
while (scanf("%d",&n)!=EOF) {
sum = 0;
while (n>=5) {
sum+=n/5;
n/=5;
}
printf("%d\n",sum);
}
return 0;
}``````

### 倾盆大雨

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