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- #include<bits/stdc++.h>
- using namespace std;
- long long int a[30];
- int main()
- {
- long long int n,b[30],c,i,j,k,l,flag=0;
- a[0]=1;
- for(i=1;i<=20;i++)
- {
- a[i]=a[i-1]*i;
- }
- while(1)
- {
- cin>>n;
- flag=0;
- if(n<0)
- break;
- if(n==0){
- cout<<"NO"<<endl;
- continue;}
- for(i=20,j=0;i>=0;i--)
- {
- if(n>a[i])
- {
- b[j++]=i;
- n-=a[i];
- }
- else if(n==a[i])
- {
- b[j++]=i;
- flag=1;
- break;
- }
- }
- if(flag==0)
- cout<<"NO"<<endl;
- else
- cout<<"YES"<<endl;
- }
- return 0;
- }
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