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#include <stdio.h> int main() { int x,m,k,n; scanf("%d",&n); int flag=0; for (int i = 1; i <= n; i++) { if (i==1) { flag =1; } for (int j = 2; j <= i/2; ++j) { if (i%j==0) { flag= 1; break; } } if (flag==0) { printf("%d ",i); } } return 0; }