#include<bits/stdc++.h>
using namespace std;
int main(){
int n,f[47];
f[0]=0 , f[1]=1;
for(int i=2;i<=46;i++) f[i]=f[i-1]+f[i-2];
while(cin>>n) cout<<f[n]<<":"<<f[n+1]<<endl;
return 0;
}
#include<bits/stdc++.h>//xxxxx
using namespace std;
int main(){
int n,f[47];
f[0]=0 , f[1]=1;
for(int i=2;i<=46;i++) f[i]=f[i-1]+f[i-2];
do{cout<<f[n]<<":"<<f[n+1]<<endl;}while(cin>>n);
return 0;
}