// https://atcoder.jp/contests/agc015/tasks/agc015_c
//
#![allow(unused_imports)]
use std::io::*;
use std::io::Write;
use std::fmt::*;
use std::str::*;
use std::cmp::*;
use std::collections::*;

// Input macros.
// Original by tanakh: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[allow(unused_macros)]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[allow(unused_macros)]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};

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

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

#[allow(unused_macros)]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };

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

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

    ($iter:expr, switch) => {
        {
            let ty = read_value!($iter, i32);
            if ty == 1 {
                vec![ty, read_value!($iter, i32), read_value!($iter, i32)]
            } else if ty == 2 {
                vec![ty, read_value!($iter, i32)]
            } else {
                vec![ty, read_value!($iter, i32)]
            }
        }
    };

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

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

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

#[allow(unused_macros)]
macro_rules! read_line {
    ($t:tt) => {
        {
            let mut s = String::new();
            std::io::stdin().read_line(&mut s).unwrap();
            s.trim_right().parse::<$t>().unwrap()
        }
    }
}

#[allow(unused_macros)]
macro_rules! dvec {
    ($t:expr ; $len:expr) => {
        vec![$t; $len]
    };

    ($t:expr ; $len:expr, $($rest:expr),*) => {
        vec![dvec!($t; $($rest),*); $len]
    };
}

#[allow(unused_macros)]
macro_rules! ifv {
    ($t:expr, $a:expr, $b: expr) => {
        if $t { $a } else { $b }
    }
}

#[allow(unused_macros)]
macro_rules! fill {
    ($t:expr, $v:expr) => {
        for i in 0..$t.len() {
            $t[i] = $v;
        }
    };
}

#[allow(unused_macros)]
macro_rules! join {
    ($t:expr, $glue:expr) => {
        $t.into_iter().map(|w| w.to_string()).collect::<Vec<_>>().join($glue)
    };
}

#[allow(unused_macros)]
macro_rules! debug {
    ($($a:expr),*) => {
        println!(concat!($(stringify!($a), " = {:?}, "),*), $($a),*);
    }
}

// ===

fn range_inclusive(sum2d: &Vec<Vec<i32>>, x1: usize, y1: usize, x2: usize, y2: usize) -> i32 {
    sum2d[x2+1][y2+1] - sum2d[x2+1][y1] - sum2d[x1][y2+1] + sum2d[x1][y1]
}

fn make_sum2d(data: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
    let n = data.len();
    let m = data[0].len();
    let mut sum2d = dvec!(0; n+1, m+1);
    for i in 0..n {
        for j in 0..m {
            sum2d[i+1][j+1] = sum2d[i+1][j] + sum2d[i][j+1] - sum2d[i][j] + data[i][j];
        }
    }
    sum2d
}

fn main() {
    input! {
        n: usize, m: usize, q: usize,
        cmap: [chars; n],
        queries: [(usize1, usize1, usize1, usize1); q] // x1,y1,x2,y2,inclusive
    };

    let mut ans = vec![0; q];
    {
        let mut table = dvec!(0; n, m);
        for i in 0..n {
            for j in 0..m {
                table[i][j] = ifv!(cmap[i][j] == '0', 0, 1);
            }
        }
        let mut sum2d = make_sum2d(table);
        for (idx, &(x1, y1, x2, y2)) in queries.iter().enumerate() {
            ans[idx] += range_inclusive(&sum2d, x1, y1, x2, y2);
        }
    }
    if n >= 2 {
        let mut table = dvec!(0; n-1, m);
        for i in 0..n-1 {
            for j in 0..m {
                table[i][j] = ifv!(cmap[i][j] == '1' && cmap[i+1][j] == '1', 1, 0);
            }
        }
        let mut sum2d = make_sum2d(table);
        for (idx, &(x1, y1, x2, y2)) in queries.iter().enumerate() {
            if x1 < x2 {
                ans[idx] -= range_inclusive(&sum2d, x1, y1, x2-1, y2);
            }
        }
    }

    if m >= 2 {
        let mut table = dvec!(0; n, m-1);
        for i in 0..n {
            for j in 0..m-1 {
                table[i][j] = ifv!(cmap[i][j] == '1' && cmap[i][j+1] == '1', 1, 0);
            }
        }
        let mut sum2d = make_sum2d(table);
        for (idx, &(x1, y1, x2, y2)) in queries.iter().enumerate() {
            if y1 < y2 {
                ans[idx] -= range_inclusive(&sum2d, x1, y1, x2, y2-1);
            }
        }
    }
    for i in 0..q {
        println!("{}", ans[i]);
    }
}


Measured memory_bytes: 69880