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59 lines (57 loc) · 1.08 KB
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#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
///////////////////////////////////////////seive
ll size = 1e6+1;
bool isprime[size];
for(ll i=0;i<size;i++)
{
isprime[i] = true;
}
isprime[0] = isprime[1] = false;
for(ll i=2;i*i<size;i++)
{
if(isprime[i])
{
for(ll j=i*i;j<size;j+=i)
isprime[j] = false;
}
}
set <ll> s;
for(ll i=0;i<size;i++)
{
if(isprime[i])
s.insert(i);
}
ll sizea = s.size();
ll a[sizea],b[sizea],f = 0;
for(auto it : s)
{
a[f++] = it;
}
b[0] = a[0];
for(ll i=1;i<sizea;i++)
{
b[i] = a[i];
b[i] += b[i-1];
}
///////////////////////////////////////////
ll t;
cin>>t;
while(t--)
{
ll n;
cin>>n;
ll index = lower_bound(a,a+sizea,n) - a;
if(a[index] != n)
{
index -= 1;
}
cout<<b[index]<<"\n";
}
return 0;
}