#include<bits/stdc++.h> using namespace std; #define max 10000 bool a[max]; int main(){ int n; cin >> n; memset(a,0,sizeof(a)); a[0] = a[1] = true; for(int i = 2;i <= n;i++){ if(!a[i]){ for(int j = i;i * j <= n;j++){ if(!a[i*j]) a[i*j] = true; else continue; } cout << i << endl; } } }
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