题解

#include <bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
int a[n];
for(int i = 0;i < n;i++)
{
cin>>a[i];
}
sort(a,a + n);
int temp = a[0];
int sum = 0;
for(int i = 0;i < n;i++)
{
if(temp != a[i])
{
cout<<temp<<" "<<sum<<endl;
temp = a[i];
sum = 1;
}
else
{
sum++;
}
}
cout<<temp<<" "<<sum;
return 0;
}