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- #include<iostream>
- using namespace std;
- int main()
- {
- long long a,b=0,sum=0,e,f;
- long long d[500];
- for(int i=0;i<500;i++)
- {d[i]=1;}
- int c;
- cin>>c;
- if(c==0){e=1;cout<<e;}
- {
- long long h=c;
- long long t=c;
- for(long long i=1;i<=(5*c)+1;i++)
- {
- a=i-1; b=0;
- f=i*5;
- while(f>1)
- {
- if(f%5==0)
- {f/=5;
- b++;}
- else {break;}
- }
- d[a]=b;
- }
- sum=0;
- h=5*h;
- for(long long i=0;i<h;i++)
- {
- sum=sum+d[i];
- if(sum==t){cout<<(i+1)*5;break;}
- if(sum>t){cout<<"No soultion";break;}
- }
- }
- }
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