fork download 
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. const long long MaxN = 55;
  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.             a[pos]=i;
  20.             backtrack(pos+1,sum+i);
  21.     }
  22. }
  23. int main()
  24. {
  25.     ios_base::sync_with_stdio(0);
  26.     cin.tie(0);
  27.     cin >> n;
  28.     backtrack(1,0);
  29. }
  30.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
Standard input is empty
stdout 

	

		
	 
	
	
			

					
			
			
			
			
			
			
			
			

			
			
			
		

	
		
		

			


			                        
			
			

				

	
					
					 https://ideone.com/xfgA24
					
					
					
					
					

												

												
						
						

					

					
					
					

						
language:

						
C++14 (gcc 8.3)

					

					

						
created:
								
						
22 hours ago

					

					

						
visibility:

						

							 public																												
							
							

								
							

						

					

										
										

					
					 Share or Embed source code
					
					
					
					

						
						
						
						
						
						
						
					

					
						
	
	
	
	
					
					
					
					
					 
					
					
					
					 
					
					
					
					
					
					

					

					

					
						
					

					


	
Discover > Sphere Engine API

	
The brand new service which powers Ideone!

	
	
Discover > IDE Widget

    
Widget for compiling and running the source code in a web browser!