jzau

Time Awake Since Boot: 1600 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

jzau

#include<iostream>
#include<cmath>
#define N 200000
using namespace std;
bool prime[N];
int main()
{
    int i, j;
    prime[0] = prime[1] = false;
    prime[2] = true;

jzau

import math

N = 200000
M = int(math.sqrt(N)) + 1;
a = [1]*N

for i in range(3, M, 2):
    for j in range(i+i, N, i):
        a[j]=0