module Main;

import CPLib.Bits::bit_set;
import CPLib.IO;

main : IO () = (
    let n = *read_i;
    let c64 = 1.shift_left(6);
    let dp = fill(2, fill(c64, 0.0));
    let dp = dp[0][0].iset(1.0);
    let dp = range(0, n).fold(dp, |n, dp|
        let dp = dp[(n+1)%2].imod(|arr| range(0, c64).fold(arr, |i, arr| arr[i].iset(0.0)));
        range(0, c64).fold(dp, |flag, dp|
            let v = dp.@(n%2).@(flag);
            range(0, 6).fold(dp, |dice, dp|
                let flag = flag.bit_set(dice);
                dp[(n+1)%2][flag].imod(add(v / 6.0))
            )
        )
    );
    dp.@(n%2).@(c64-1).to_string.println;;
    pure()
);