为何要“R-L”?
by AcerMo @ 2018-05-12 16:15:33
变态吧?干嘛这么做
by muller @ 2018-05-12 16:30:49
我硬是没看懂
by 起名真的很难 @ 2018-05-12 16:39:00
> 看不懂啊你markdown都不用
by moye到碗里来 @ 2018-05-12 16:41:34
#include<iostream>
using namespace std;
int main()
{
long long a,b,n,ans=0;
cin>>a>>b;
for(int i=a;i<=b;i++)
{
n=i;
do{
if(n%10==2)ans++;
n/=10;
}while(n>0);
}
cout<<ans;
return 0;
}
by 北稚の橘沫 @ 2019-02-19 20:01:03
@[杨天行](/space/show?uid=41529)
我哪知道哪儿错了
by bbbblgstore @ 2019-08-26 15:43:59