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1153.cpp
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1153.cpp
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#include <cstdio>
#include <vector>
using namespace std;
int N;
bool a[1000001];
int main(){
scanf("%d",&N);
a[0]=a[1]=1;
for(int i=2;i<=N;i++){
for(int j=2*i;j<=N;j+=i) a[j]=1;
}
vector<int> ans;
if(N<8) puts("-1");
else{
if(N%2){
ans.push_back(2);
ans.push_back(3);
for(int i=2;i<=N;i++){
if(!a[i] && !a[N-5-i]){
ans.push_back(i);
ans.push_back(N-5-i);
break;
}
}
}else{
ans.push_back(2);
ans.push_back(2);
for(int i=2;i<=N;i++){
if(!a[i] && !a[N-4-i]){
ans.push_back(i);
ans.push_back(N-4-i);
break;
}
}
}
}
for(auto p : ans) printf("%d ",p);
}