hdu 5210 Delete

 1 #include<algorithm>
 2 #include<iostream>
 3 #include<cstdlib>
 4 #include<cstdio>
 5 using std::sort;
 6 const int Max_N = 1010;
 7 int arr[Max_N];
 8 int main() {
 9 #ifdef LOCAL
10     freopen("in.txt", "r", stdin);
11     freopen("out.txt", "w+", stdout);
12 #endif
13     int n, k, tot, ret, cnt;
14     while (~scanf("%d", &n)) {
15         tot = 0;
16         for (int i = 0; i < n; i++) scanf("%d", &arr[i]);
17         scanf("%d", &k);
18         sort(arr, arr + n);
19         for (int i = 0; i < n;) {
20             ret = arr[i], cnt = 0;
21             for (; ret == arr[i]; i++) cnt++;
22             tot++;
23         }
24         if (n - tot <= k) printf("%d\n", n - k);
25         else printf("%d\n", tot);
26     }
27     return 0;
28 }