```
#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll n,ans,sum;
int Isprime(int k){
for(int i=2;i<k;i++){
if(k%i==0) return 0;
}
return 1;
}
int main(){
cin>>n;
for(int i=2;i<=n;i++){
if(Isprime(i)==1){
sum++;
n-=i;
cout<<i<<endl;
}
}
cout<<sum<<endl;
}
by LoTLaneyyat @ 2024-03-06 13:44:23
@[xcgmy](/user/1200059)
```cpp
#include<bits/stdc++.h>
using namespace std;
int prime(int h);
int n,i,js,sum;
int main()
{
cin>>n;
for(i=2;i<=100000;i++){
if(prime(i)){
js+=i; //modified
if(js<=n){ //modified
cout<<i<<endl;
sum++;
}
else break;//?!
}
}
cout<<sum;
return 0;
}
int prime(int h){
int j,k,flag=1;
k=sqrt(h);
for(j=2;j<=k;j++){
if(h%j==0){
flag=0;
break;
}
}
if(flag) return 1;
else return 0;
}
```
by Whycmd @ 2024-03-06 14:08:07
第十行改成js+i<=n(我原来也是二十分，有个大佬这么说的，我就100分了)
by is_laofang @ 2024-03-07 18:56:57
@[LoTLaneyyat](/user/910962) @[Whycmd](/user/823196) @[is_laofang](/user/1059639)
已经AC了，本贴到此结束
by xcgmy @ 2024-03-07 21:14:21
谢谢大家
by xcgmy @ 2024-03-07 21:14:55