Submission #615740

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

struct Initializer {
  Initializer() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    cout << fixed << setprecision(15);
  }
} initializer;

int main() {
  long long n;
  cin >> n;
  set<long long> s;
  for (long long i = 25; i <= n; i = i * 100 + 25) {
    for (long long j = i; j <= n; j += i) {
      s.insert(j);
    }
  }
  cout << s.size() << endl;
}

Submission Info

Judge Result