可以用map
by Lontano_Island @ 2023-12-09 12:39:10
```cpp
#include<bits/stdc++.h>
using namespace std;
int n,a[200005],sum=1;
int main(){
cin>>n;
for(int i=1;i<=n;i++) cin>>a[i];
sort(a+1,a+n+1);
for(int i=1;i<=n;i++)
if(a[i+1]==a[i]) sum++;
else{
cout<<a[i]<<' '<<sum<<endl;
sum=1;
}
return 0;
}
```
by zrl123456 @ 2023-12-21 18:24:19