1 #include <iostream>
2 #include <algorithm>
3 #include <
set>
4 using namespace std;
5 int arr[
1005];
6
7 int main()
8 {
9 ios::sync_with_stdio(
false);
10 cin.tie(
0);
11 int n;
12 cin >>
n;
13 for (
int i =
0; i < n; i++
)
14 cin >>
arr[i];
15 sort(arr, arr +
n);
16 int ans =
0;
17 for (
int i =
1; i < n; i++
)
18 if (arr[i] - arr[i -
1] ==
1)
19 ans++
;
20 cout << ans <<
endl;
21 return 0;
22 }
转载于:https://www.cnblogs.com/AntonLiu/p/11163766.html
