#include <bits/stdc++.h>
using namespace std;
int main()
{
int t, c = 0;
int n;
cin>>t;
while (t--)
{
cin>>n;
printf("Case #%d: %d\n", ++c, n*2-1);
}
return 0;
}
using namespace std;
int main()
{
int t, c = 0;
int n;
cin>>t;
while (t--)
{
cin>>n;
printf("Case #%d: %d\n", ++c, n*2-1);
}
return 0;
}
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