质数筛网

#include <bits/stdc++.h>
using namespace std;

int main() {
int count=0,sum=0;
vector<bool> prime(11,true);prime[0]=prime[1]=false;
for(int p=2;p*p<=10;++p) if(prime[p]) for(int x=p*p;x<=10;x+=p)prime[x]=false;
for(int x=2;x<=10;++x)if(prime[x]){++count;sum+=x;}
cout<<count<<" "<<sum;
}

#include <bits/stdc++.h>
using namespace std;

int main() {
int count=0,sum=0;
vector<bool> prime(11,true);prime[0]=prime[1]=false;
for(int p=2;p*p<=10;++p) if(prime[p]) for(int x=p*p;x<=10;x+=p)prime[x]=false;
for(int x=2;x<=10;++x)if(prime[x]){++count;sum+=x;}
cout<<count<<" "<<sum;
}