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int main() { int range; cin >> range; for(int i=1;i<=range;i++){ sieve[i] = 1; } sieve[1] = 0; for(int i=1;i<=range;i++){ if(sieve[i]==1){ cout << i << " "; for(int j=1*2;j<=range;j+=1){ sieve[j] = 0; } } } }
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