#include<cstdio> #include<iostream> #include<cstdlib> using namespace std; int a[10001]={1},n,total; int search(int,int); int print(int); int main() { cin>>n; search(n,1); cout<<total<<endl; return 0; } int search(int s,int t) { int i; for(i=a[t-1];i<=s;i++) if(i<n) { a[t]=i; s-=i; if(s==0)print(t); else search(s,t+1); s+=i; } } int print(int t) { for(int i=1;i<=t-1;i++) cout<<a[i]<<"+"; cout<<a[t]<<endl; total++; }