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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. const long long MaxN = 65;
  4. long long n;
  5. long long a[MaxN];
  6. void backtrack(long long pos, long long sum)
  7. {
  8.     if(sum==n)
  9.     {
  10.         for (long long i=1; i<=pos-1; i++)
  11.         {
  12.             cout << a[i] << " ";
  13.         }
  14.         cout << "\n";
  15.         return ;
  16.     }
  17.     for (long long i=max(a[pos-1],1ll); i<=n-sum; i++)
  18.     {
  19.         if((i!= n-sum && (pos-1)%2!=0) || ((pos-1)%2==0))
  20.         {
  21.             a[pos]=i;
  22.             backtrack(pos+1,sum+i);
  23.         }
  24.     }
  25. }
  26. int main()
  27. {
  28.     ios_base::sync_with_stdio(0);
  29.     cin.tie(0);
  30.     cin >> n;
  31.     backtrack(1,0);
  32. }
  33.  
Success #stdin #stdout 0s 5320KB
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language:

						
C++14 (gcc 8.3)

					

					

						
created:
								
						
8 days ago

					

					

						
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