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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void executeTime() {
  5.     cerr << "Time Taken: " << (float)clock() / CLOCKS_PER_SEC << " secs";
  6. }
  7.  
  8. int main() {
  9.  
  10.     int n; cin >> n;
  11.  
  12.     map<int, int> mp;
  13.  
  14.     while (n % 2 == 0) {
  15.         mp[2]++;
  16.         n >>= 1;
  17.     }
  18.  
  19.     for (int i = 3; i <= sqrt(n); i += 2) {
  20.         while (n % i == 0) {
  21.             mp[i] ++;
  22.             n /= i;
  23.         }
  24.     }
  25.  
  26.     if (n > 1) {
  27.         mp[n]++;
  28.     }
  29.  
  30.     for (auto &x : mp) {
  31.         cout << x.first << ' ' << x.second << endl;
  32.     }
  33.  
  34.  
  35.  
  36.  
  37.     executeTime();
  38.     return 0;
  39. }
Success #stdin #stdout #stderr 0s 5320KB
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stdin
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10
stdout
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2 1
5 1
stderr
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Time Taken: 0.004355 secs
https://ideone.com/ufPkXF
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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