怎么就MLE了？

为什么内存爆了啊？？

#include <bits/stdc++.h>
#define IOS ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define endl '\n'
#define int long long
const int N = 1e8 + 10;
using namespace std;

vector<int> init(int n){
    vector<int> isprime(N + 1,true);
    vector<int> prime;
    for(int i = 2; i <= n; i++){
        if(isprime[i])
            prime.push_back(i);
        for(int j = 0; j < prime.size() && i * prime[j] <= n; j++){
            isprime[i * prime[j]] = false;
            if(i % prime[j] == 0)
                break;
        }
    }
    return prime;
}

signed main() {
    IOS;
    int n,m;
    cin>>n>>m;
    vector<int> ans = init(n);
    while(m--){
        int t;cin>>t;
        cout << ans[t - 1] << endl;
    }
    return 0;
}