fn solve() {
    let s = std::io::stdin();
    let mut sc = Scanner { stdin: s.lock() };
    let h: usize = sc.read();
    let w: usize = sc.read();
    let k: usize = sc.read();
    let board: Vec<Vec<char>> = (0..h).map(|_| sc.chars()).collect();
    let mut horizontal_cuts = vec![];
    {
        let mut last_y = None;
        for (y, line) in board.iter().enumerate() {
            for (x, cell) in line.iter().enumerate() {
                if *cell == '#' {
                    if let Some(v) = last_y {
                        horizontal_cuts.push(v);
                    }
                    last_y = Some(y);
                    break;
                }
            }
        }
        horizontal_cuts.push(h - 1);
        horizontal_cuts.sort();
        horizontal_cuts.dedup();
    }
    // let mut vertical_cuts = vec![];
    // {
    //     let mut last_x = None;
    //     for x in 0..w {
    //         for y in 0..h {
    //             let cell = board[y][x];
    //             if cell == '#' {
    //                 if let Some(v) = last_x {
    //                     vertical_cuts.push(v);
    //                 }
    //                 last_x = Some(x);
    //                 break;
    //             }
    //         }
    //     }
    //     vertical_cuts.push(w - 1);
    //     vertical_cuts.sort();
    //     vertical_cuts.dedup();
    // }
    //eprintln!("{:?}", horizontal_cuts);
    let mut results = vec![vec![None; w]; h];
    let mut pos_y = 0;
    let mut cnt = 1;
    for &hy in horizontal_cuts.iter() {
        let mut vertical_cuts = vec![];
        let mut pre_x = None;
        for y in pos_y..hy + 1 {
            for x in 0..w {
                if board[y][x] == '#' {
                    if let Some(v) = pre_x {
                        vertical_cuts.push(v);
                    }
                    pre_x = Some(x);
                }
            }
            if pre_x.is_some() {
                break;
            }
        }
        vertical_cuts.push(w - 1);
        vertical_cuts.sort();
        vertical_cuts.dedup();
        //eprintln!("{:?}", vertical_cuts);
        let mut pos_x = 0;
        for &vx in vertical_cuts.iter() {
            // eprintln!("hy: {}, vx: {}", hy, vx);
            // eprintln!("posy: {}, posx: {}", pos_y, pos_x);
            //return;
            for y in pos_y..hy + 1 {
                for x in pos_x..vx + 1 {
                    assert!(results[y][x].is_none());
                    //eprintln!("{} {}", y, x);
                    results[y][x] = Some(cnt);
                }
            }
            cnt += 1;
            pos_x = vx + 1;
            //eprintln!("{:?}", results);
            //return;
        }
        //return;
        //cnt += vertical_cuts.len();
        pos_y = hy + 1;
    }
    for i in 0..h {
        for j in 0..w {
            print!("{} ", results[i][j].unwrap());
        }
        println!("");
    }
}

fn main() {
    std::thread::Builder::new()
        .stack_size(64 * 1024 * 1024) // 64MB
        .spawn(|| solve())
        .unwrap()
        .join()
        .unwrap();
}
pub mod utils {
    const DYX: [(isize, isize); 8] = [
        (0, 1),   //right
        (1, 0),   //down
        (0, -1),  //left
        (-1, 0),  //top
        (1, 1),   //down right
        (-1, 1),  //top right
        (1, -1),  //down left
        (-1, -1), //top left
    ];

    pub fn try_adj(y: usize, x: usize, dir: usize, h: usize, w: usize) -> Option<(usize, usize)> {
        let ny = y as isize + DYX[dir].0;
        let nx = x as isize + DYX[dir].1;
        if ny >= 0 && nx >= 0 {
            let ny = ny as usize;
            let nx = nx as usize;
            if ny < h && nx < w {
                Some((ny, nx))
            } else {
                None
            }
        } else {
            None
        }
    }
}

//snippet from kenkoooo
pub struct Scanner<R> {
    stdin: R,
}

impl<R: std::io::Read> Scanner<R> {
    pub fn read<T: std::str::FromStr>(&mut self) -> T {
        use std::io::Read;
        let buf = self
            .stdin
            .by_ref()
            .bytes()
            .map(|b| b.unwrap())
            .skip_while(|&b| b == b' ' || b == b'\n' || b == b'\r')
            .take_while(|&b| b != b' ' && b != b'\n' && b != b'\r')
            .collect::<Vec<_>>();
        unsafe { std::str::from_utf8_unchecked(&buf) }
            .parse()
            .ok()
            .expect("Parse error.")
    }
    pub fn read_line(&mut self) -> String {
        use std::io::Read;
        let buf = self
            .stdin
            .by_ref()
            .bytes()
            .map(|b| b.unwrap())
            .skip_while(|&b| b == b'\n' || b == b'\r')
            .take_while(|&b| b != b'\n' && b != b'\r')
            .collect::<Vec<_>>();
        unsafe { std::str::from_utf8_unchecked(&buf) }
            .parse()
            .ok()
            .expect("Parse error.")
    }
    pub fn vec<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read()).collect()
    }

    pub fn chars(&mut self) -> Vec<char> {
        self.read::<String>().chars().collect()
    }
}


Measured memory_bytes: 9084