32 lines
732 B
C++
32 lines
732 B
C++
#include <iostream>
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#include <cstdio>
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#include <cstring>
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using namespace std;
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int main()
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{
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int p[1001],vis[1001],k=0;
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memset(vis,0,sizeof(vis));
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memset(p,0,sizeof(p));
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for(int i=2; i*i<=1000; i++)
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for(int j=i*i; j<=1000; j+=i)
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vis[j]=1;
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for(int i=1; i<=1000; i++)
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if(!vis[i])
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p[k++]=i;
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int n,m;
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while(cin>>n>>m)
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{
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int sum=0;
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for(int i=1; i<=n; i++)
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if(!vis[i])
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sum++;
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int c=(sum>>1)-m+(sum&1);
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c=(c<0)?0:c;
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printf("%d %d:", n, m);
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for(int i=c; i<c+2*m-(sum&1)&&i<sum; i++)
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printf(" %d",p[i]);
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printf("\n\n");
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}
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return 0;
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}
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