1766784603-1766768400 HUSTOJ
#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){		
		for(int j=i;j<=n;j++){		
			if(j<=n-i-j){
				printf("%d=",n);
				printf("%d+%d+%d",i,j,n-i-j);
				printf("\n");
			}			
		}	
	}	
}
/**************************************************************
	Problem: 1516
	User: zhangjinpei
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/