题解 | #汽水瓶#
汽水瓶
http://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
#include <stdio.h>
int main(void)
{
int b,c,n;
while(scanf("%d",&n)!=EOF){
b=n;
if(b>=2){
c=b/2;
printf("%d\n",c);
}
else{
printf("\n");
}
}
} 
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