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  1. /// no time to waste
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int n, k;
  6. int a[21];
  7.  
  8. void dequy(int i) {
  9.     if(i > k) {
  10.         for(int j=1;j<=k;j++) cout << a[j] << ' ';
  11.         cout << '\n';
  12.         return;
  13.     }
  14.  
  15.     int rem = k - i + 1;
  16.     for(int j=a[i - 1] + 1;j <= n - rem + 1;j++) {
  17.         a[i] = j;
  18.         dequy(i + 1);
  19.     }
  20.     return;
  21. }
  22.  
  23. int32_t main() {
  24.     ios::sync_with_stdio(false);
  25.     cin.tie(0), cout.tie(0);
  26.     freopen("tapcon.inp", "r", stdin);
  27.     freopen("tapcon.out", "w", stdout);
  28.  
  29.     cin >> n >> k;
  30.     dequy(1);
  31.     return 0;
  32. }
Success #stdin #stdout 0.01s 5316KB
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Standard output is empty
https://ideone.com/sd0NNE
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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