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- import java.util.Arrays;
- int n;
- boolean[] p=new boolean[n+1];
- public void fillSieve() {
- Arrays.fill(p,true);
- p[0]=p[1]=false;
- for int i=2;i<p.length;i++) {
- if(p[i]) {
- for (int j=2;i*j<p.length;j++) {
- p[i*j]=false;
- }
- }
- }
- }
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