#include<bits/stdc++.h> using namespace std; int db[1000],book[1000],n,sum; int pd(int pd) { for(int i=2;i<pd;i++) { if(pd%i==0)return 1; } return 0; } void dg(int x) { if(x>n) { sum++; cout<<sum<<":"; for(int i=1;i<=n;i++)cout<<book[i]<<" "; cout<<endl; return; } for(int i=1;i<=n;i++) { if(db[i]>0)continue; else if(pd(i+book[x-1])==1&&x!=1)continue; else if(pd(i+book[1])1&&xn)continue; else{ db[i]=1; book[x]=i; dg(x+1); db[i]=0; book[x]=0; } } } int main() { cin>>n; dg(1); cout<<"total:"<<sum; return 0; }

#include<bits/stdc++.h>
using namespace std;
int db[1000],book[1000],n,sum;
int pd(int pd){
	for(int i=2;i<pd;i++){
		if(pd%i==0)return 1;
	}
	return 0;
}
void dg(int x){
	if(x>n){
		sum++;
		cout<<sum<<":";
		for(int i=1;i<=n;i++)cout<<book[i]<<" ";
		cout<<endl;
		return;
	}
	for(int i=1;i<=n;i++){
		if(db[i]>0)continue;
		else if(pd(i+book[x-1])==1&&x!=1)continue;
		else if(pd(i+book[1])==1&&x==n)continue;
		else{
			db[i]=1;
			book[x]=i;
			dg(x+1);
			db[i]=0;
			book[x]=0;
		}
	}
}
int main(){
	cin>>n;
	dg(1);
	cout<<"total:"<<sum;
	return 0;
}