#include<iostream>
#include<cstdio>
using namespace std;
int main(){
int n;
cin >> n;
int x,count1=0,count2=0;
while(cin >> x){
if(x >=10 && x<= 20){
count1++;
}else{
count2++;
}
}
cout<<count1<<" in"<<endl<<count2<<" out"<<endl;
return 0;
}
把cin >> x可以换成n,在里面做n–
这样写的话就和输入的n没关系了,我可以输入n+1个
我怎么没看懂那个cin>>x;
while(cin >> x) 秒啊