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midnight_sun

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Nov 15th, 2022
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C++ 0.36 KB | None | 0 0
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main() {
  4.     bool prime[201] = {};
  5.     for (int i = 2; i <= 100; i++) {
  6.         if (!prime[i]) {
  7.             for (int g = i + i; g <= 100; g += i) prime[g] = true;
  8.         }
  9.     }
  10.     cout << 1 << " -\n";
  11.     for (int i = 2; i <= 100; i++) {
  12.         cout << i << " ";
  13.         if (prime[i]) cout << "is not prime\n";
  14.         else cout << "is prime\n";
  15.     }
  16. }
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