Statistics of the number of # # Blue Bridge Cup practice

Statistics [Blue Bridge Cup] [algorithm training VIP] numbers

#include<bits/stdc++.h>

using  namespace  std;

int  main()
{
    freopen("in.txt","r",stdin);
    int n, a[1010];
    int i;
    int cnt = 1;
    scanf("%d", &n);
    for(i = 0; i < n; i++)
    {
        scanf("%d", &a[i]);
    }
    sort(a, a + n);//重点
    for(i = 0; i < n; i++)
    {
        if(a[i] == a[i + 1])
            cnt++;
        else
        {
            printf("%d %d\n", a[i], cnt);
            cnt = 1;
        }
    }

}