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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios::sync_with_stdio(false);
  6.     cin.tie(0);
  7.  
  8.     int n;
  9.     cin >> n;
  10.     vector<int> a(n), d1(n, -1), d2(n, -1);
  11.  
  12.     for (int i = 0; i < n; ++i) cin >> a[i];
  13.  
  14.     for (int i = 0; i < n; ++i) {
  15.         int x = a[i];
  16.         vector<int> divisors;
  17.  
  18.         for (int d = 2; d * d <= x; ++d) {
  19.             if (x % d == 0) {
  20.                 divisors.push_back(d);
  21.                 if (d != x / d) divisors.push_back(x / d);
  22.             }
  23.         }
  24.  
  25.         int found = 0;
  26.         for (int j = 0; j < (int)divisors.size(); ++j) {
  27.             for (int k = j + 1; k < (int)divisors.size(); ++k) {
  28.                 int p = divisors[j], q = divisors[k];
  29.                 if (__gcd(p + q, x) == 1) {
  30.                     d1[i] = p;
  31.                     d2[i] = q;
  32.                     found = 1;
  33.                     break;
  34.                 }
  35.             }
  36.             if (found) break;
  37.         }
  38.     }
  39.  
  40.     for (int x : d1) cout << x << ' ';
  41.     cout << '\n';
  42.     for (int x : d2) cout << x << ' ';
  43.     cout << '\n';
  44.  
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0s 5328KB
comments (?)
stdin
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10
2 3 4 5 6 7 8 9 10 24
stdout
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-1 -1 -1 -1 2 -1 -1 -1 2 2 
-1 -1 -1 -1 3 -1 -1 -1 5 3
https://ideone.com/ZIFeNj
language:
C++ (gcc 8.3)
created:
23 hours ago
visibility:
public

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