#34676: #include<iostream> using namespace std; int main(){ int n; int 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]<<"\n"; } return 0; }