Submission #1924275


Source Code Expand

Copy
#include <bits/stdc++.h>
using namespace std;
#define L 100001
long q;
vector < long > prim(L,0);
void init()
{
    long i,j;
    vector < long > tmp(L,1);
    for (i=2;i<=sqrt(L);i++)
        if (tmp[i])
            for (j=2*i;j<L;j+=i)
                tmp[j]=0;
    tmp[0]=tmp[1]=0;
    for (i=1;i<L;i+=2)
        if (tmp[i]&&tmp[(i+1)/2]) prim[i]=1;
}
void solve()
{
    while(q--)
    {
        long i,l,r,ans=0;
        cin>>l>>r;
        for (i=l;i<=r;i++)
            if (prim[i]) ans++;
        cout<<ans<<endl;
    }
}
int main()
{
    init();
    while(cin>>q)
        solve();
}

Submission Info

Submission Time
Task D - 2017-like Number
User wahahawa
Language C++14 (GCC 5.4.1)
Score 0
Code Size 622 Byte
Status TLE
Exec Time 2103 ms
Memory 1792 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 400
Status
AC × 3
AC × 4
TLE × 6
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, sample_01.txt, sample_02.txt, sample_03.txt
Case Name Status Exec Time Memory
01.txt TLE 2103 ms 1792 KB
02.txt TLE 2103 ms 1792 KB
03.txt TLE 2103 ms 1792 KB
04.txt TLE 2103 ms 1792 KB
05.txt TLE 2103 ms 1792 KB
06.txt TLE 2103 ms 1792 KB
07.txt AC 1376 ms 1792 KB
sample_01.txt AC 2 ms 1792 KB
sample_02.txt AC 2 ms 1792 KB
sample_03.txt AC 2 ms 1792 KB