macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        let mut next = || { iter.next().unwrap() };
        input_inner!{next, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};

    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };

    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };

    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };

    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };

    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}

fn main() {
    input! {
        N: usize,
        mat: [[usize; N]; N],
    }

    // 単位元の存在チェック
    let mut unit = N; // unitは制約外の値を設定しておく
    for i in 0..N {
        let mut flag = true;
        for j in 0..N {
            if mat[i][j] != j {
                flag = false;
            }
        }
        if flag {
            unit = i;
        }
    }
    if unit == N {
        println!("No");
        return;
    }
    println!("unit {}", unit);

    // 逆元の存在
    for i in 0..N {
        let mut flag = false;
        for j in 0..N {
            if mat[i][j] == unit {
                flag = true;
            }
        }
        if !flag {
            println!("No");
            return;
        }
    }

    // 結合則のチェック
    for i in 0..N {
        for j in 0..N {
            for k in 0..N {
                if mat[mat[i][j]][k] != mat[i][mat[j][k]] {
                    println!("No");
                    return;
                }
            }
        }
    }

    println!("Yes");

}