test/aoj/alds1_1_c.test.cpp

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Last update: 2022-12-18 20:53:53+09:00
Problem: https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/1/ALDS1_1_C

Depends on

src/math/is_prime.hpp

Code

#define PROBLEM                                                                \
  "https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/1/ALDS1_1_C"

#include <bits/stdc++.h>
using namespace std;

#include "../../src/math/is_prime.hpp"

int main() {
  int n;
  cin >> n;
  int ans = 0;
  for (int i = 0; i < n; ++i) {
    int a;
    cin >> a;
    if (is_prime(a)) {
      ++ans;
    }
  }
  cout << ans << endl;
  return 0;
}

#line 1 "test/aoj/alds1_1_c.test.cpp"
#define PROBLEM                                                                \
  "https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/1/ALDS1_1_C"

#include <bits/stdc++.h>
using namespace std;

#line 2 "src/math/is_prime.hpp"

#line 4 "src/math/is_prime.hpp"
using namespace std;

template <typename T = long long> bool is_prime(T n) {
  for (T i = 2; i * i <= n; ++i) {
    if (n % i == 0) {
      return false;
    }
  }
  return true;
}
#line 8 "test/aoj/alds1_1_c.test.cpp"

int main() {
  int n;
  cin >> n;
  int ans = 0;
  for (int i = 0; i < n; ++i) {
    int a;
    cin >> a;
    if (is_prime(a)) {
      ++ans;
    }
  }
  cout << ans << endl;
  return 0;
}