Submission #588417

#	Time	Username	Problem	Language	Result	Execution time	Memory
588417		MilosMilutinovic	Vepar (COCI21_vepar)	C++14	70 / 70	209 ms	5788 KiB

Main

/**
 *    author:  wxhtzdy
 *    created: 03.07.2022 11:06:33
**/
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  const int MAX = 1e7 + 5;
  vector<bool> pr(MAX, true);
  for (int i = 2; i < MAX; i++) {
    if (pr[i]) {
      for (long long j = i * 1LL * i; j < MAX; j += i) {
        pr[j] = false;
      }
    }
  } 
  vector<int> primes;           
  for (int i = 2; i < MAX; i++) {
    if (pr[i]) {
      primes.push_back(i);
    }
  } 
  auto Count = [&](int x, int L, int R) {
    long long p = x, cnt = 0;
    while (p <= R) {
      cnt += (R / p - (L - 1) / p);
      p *= x;
    }
    return cnt;
  };
  int tt;
  cin >> tt;
  while (tt--) {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    bool ok = true;
    for (int i = 0; i < (int) primes.size(); i++) {
      if (Count(primes[i], a, b) > Count(primes[i], c, d)) {
        ok = false;
        break;
      }
    }
    cout << (ok ? "DA" : "NE") << '\n';
  }
  return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10