Language: C++

using namespace std;
 
int main() {
    int n, k;
    cin >> n >> k;
    if(k == 0) cout << 1LL * n * n << endl;
    else {
        long long ans = 0;
        for(int i = k + 1; i <= n; i++){
            ans += (n / i) * (i - k);
            if(n % i >= k)    ans += n % i - k + 1;
        }
        cout << ans << endl;
    }
    return 0;
}

Compiler output:
a.cc:2:1: error: extended character   is not valid in an identifier
    2 |  
      | ^
a.cc:4:1: error: extended character   is not valid in an identifier
    4 |     int n, k;
      | ^
a.cc:4:1: error: extended character   is not valid in an identifier
a.cc:4:1: error: extended character   is not valid in an identifier
a.cc:4:1: error: extended character   is not valid in an identifier
a.cc:5:1: error: extended character   is not valid in an identifier
    5 |     cin >> n >> k;
      | ^
a.cc:5:1: error: extended character   is not valid in an identifier
a.cc:5:1: error: extended character   is not valid in an identifier
a.cc:5:1: error: extended character   is not valid in an identifier
a.cc:6:1: error: extended character   is not valid in an identifier
    6 |     if(k == 0) cout << 1LL * n * n << endl;
      | ^
a.cc:6:1: error: extended character   is not valid in an identifier
a.cc:6:1: error: extended character   is not valid in an identifier
a.cc:6:1: error: extended character   is not valid in an identifier
a.cc:7:1: error: extended character   is not valid in an identifier
    7 |     else {
      | ^
a.cc:7:1: error: extended character   is not valid in an identifier
a.cc:7:1: error: extended character   is not valid in an identifier
a.cc:7:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
    8 |         long long ans = 0;
      | ^
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
    9 |         for(int i = k + 1; i <= n; i++){
      | ^
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
   10 |             ans += (n / i) * (i - k);
      | ^
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
   11 |             if(n % i >= k)    ans += n % i - k + 1;
      | ^
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:27: error: extended character   is not valid in an identifier
   11 |             if(n % i >= k)    ans += n % i - k + 1;
      |                           ^
a.cc:11:27: error: extended character   is not valid in an identifier
a.cc:11:27: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
   12 |         }
      | ^
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
   13 |         cout << ans << endl;
      | ^
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
   14 |     }
      | ^
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
   15 |     return 0;
      | ^
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:2:1: error: '\U000000a0' does not name a type
    2 |  
      | ^