50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
#include<iostream>
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#include<cstdio>
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#include<cstring>
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#include<algorithm>
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#include<map>
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#include<queue>
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#include<set>
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#include<cmath>
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#include<bitset>
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#define mem(a,b) memset(a,b,sizeof(a))
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#define lson i<<1,l,mid
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#define rson i<<1|1,mid+1,r
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#define INF 510010
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#define maxn 400010
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using namespace std;
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typedef long long ll;
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typedef unsigned long long ull;
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ll p[1010];
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ll prime[30]= {2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53};
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void getartprime(ll cur,int cnt,int limit,int k)
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{
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if(cur>(1LL<<60) || cnt>150) return ;
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if(p[cnt]!=0 && p[cnt]>cur)
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p[cnt]=cur;
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if(p[cnt]==0)
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p[cnt]=cur;
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ll temp=cur;
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for(int i=1; i<=limit; i++)
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{
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temp=temp*prime[k];
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if(temp>(1LL<<60)) return;
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getartprime(temp,cnt*(i+1),i,k+1);
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}
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}
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int main()
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{
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int n;
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getartprime(1,1,75,0);
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for(int i=1; i<=75; i++)
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{
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if(p[i*2-1]!=0 && p[i*2]!=0)
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p[i]=min(p[i*2-1],p[i*2]);
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else if(p[i*2]!=0) p[i]=p[i*2];
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else p[i]=p[i*2-1];
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}
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while(scanf("%d",&n),n)
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printf("%I64d\n",p[n]);
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return 0;
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}
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