Problem:
Score : 300 points

Problem

Takahashi, who is a novice in competitive programming, wants to learn M algorithms.
Initially, his understanding level of each of the M algorithms is 0.

Takahashi is visiting a bookstore, where he finds N books on algorithms.
The i-th book (1\leq i\leq N) is sold for C_i yen (the currency of Japan). If he buys and reads it, his understanding level of the j-th algorithm will increase by A_{i,j} for each j (1\leq j\leq M).
There is no other way to increase the understanding levels of the algorithms.

Takahashi's objective is to make his understanding levels of all the M algorithms X or higher. Determine whether this objective is achievable. If it is achievable, find the minimum amount of money needed to achieve it.

Constraints

All values in input are integers.

1\leq N, M\leq 12

1\leq X\leq 10^5

1\leq C_i \leq 10^5

0\leq A_{i, j} \leq 10^5

Input

Input is given from Standard Input in the following format:

N M X
C_1 A_{1,1} A_{1,2} \cdots A_{1,M}
C_2 A_{2,1} A_{2,2} \cdots A_{2,M}
\vdots
C_N A_{N,1} A_{N,2} \cdots A_{N,M}

Output

If the objective is not achievable, print -1; otherwise, print the minimum amount of money needed to achieve it.

Sample Input 1

3 3 10
60 2 2 4
70 8 7 9
50 2 3 9

Sample Output 1

120

Buying the second and third books makes his understanding levels of all the algorithms 10 or higher, at the minimum cost possible.

Sample Input 2

3 3 10
100 3 1 4
100 1 5 9
100 2 6 5

Sample Output 2

-1

Buying all the books is still not enough to make his understanding levels of all the algorithms 10 or higher.

Sample Input 3

8 5 22
100 3 7 5 3 1
164 4 5 2 7 8
334 7 2 7 2 9
234 4 7 2 8 2
541 5 4 3 3 6
235 4 8 6 9 7
394 3 6 1 6 2
872 8 4 3 7 2

Sample Output 3

1067

Solution in Rust (1.42.0) (judge verdict: Accepted)

#![allow(dead_code)]
use crate::bit::{ones, stands};
use crate::extra::VecExtra;
use crate::scanner::Scanner;
use std::cmp::min;
fn main() {
    let mut scan = Scanner::new();
    let n = scan.read::<usize>();
    let m = scan.read::<usize>();
    let x = scan.read::<i64>();
    let mut c = vec![];
    let mut a = vec![];
    for _ in 0..n {
        c.push(scan.read::<i64>());
        let b = scan.readn::<i64>(m);
        a.push(b);
    }
    let mut ret = 1i64 << 60;
    for mask in 0..=ones(n) {
        let mut sum = 0;
        let mut status = vec![0; m];
        for i in 0..n {
            if stands(mask, i) {
                sum += c[i];
                for j in 0..m {
                    status[j] += a[i][j];
                }
            }
        }
        if status.all(|s| *s >= x) {
            ret = min(ret, sum);
        }
    }
    println!("{}", if ret == 1i64 << 60 { -1 } else { ret });
}
mod extra {
    use std::iter::{FromIterator, Sum};
    pub trait VecExtra<T> {
        fn map<B, F>(&self, f: F) -> Vec<B>
        where
            F: FnMut(T) -> B;
        fn filter<P>(&self, predicate: P) -> Vec<T>
        where
            P: FnMut(&T) -> bool;
        fn filter_map<B, F>(&self, f: F) -> Vec<B>
        where
            F: FnMut(T) -> Option<B>;
        fn any<P>(&self, predicate: P) -> bool
        where
            P: FnMut(&T) -> bool;
        fn all<P>(&self, predicate: P) -> bool
        where
            P: FnMut(&T) -> bool;
        fn sum<S>(&self) -> S
        where
            S: Sum<T>;
        fn enumerate(&self) -> Vec<(usize, T)>;
        fn to<B: FromIterator<T>>(&self) -> B;
    }
    impl<T: Clone> VecExtra<T> for Vec<T> {
        fn map<B, F>(&self, f: F) -> Vec<B>
        where
            F: FnMut(T) -> B,
        {
            self.iter().cloned().map(f).collect()
        }
        fn filter<P>(&self, predicate: P) -> Vec<T>
        where
            P: FnMut(&T) -> bool,
        {
            self.iter().cloned().filter(predicate).collect()
        }
        fn filter_map<B, F>(&self, f: F) -> Vec<B>
        where
            F: FnMut(T) -> Option<B>,
        {
            self.iter().cloned().filter_map(f).collect()
        }
        fn any<P>(&self, predicate: P) -> bool
        where
            P: FnMut(&T) -> bool,
        {
            self.iter().any(predicate)
        }
        fn all<P>(&self, predicate: P) -> bool
        where
            P: FnMut(&T) -> bool,
        {
            self.iter().all(predicate)
        }
        fn sum<S>(&self) -> S
        where
            S: Sum<T>,
        {
            Sum::sum(self.iter().cloned())
        }
        fn enumerate(&self) -> Vec<(usize, T)> {
            self.iter().cloned().enumerate().collect()
        }
        fn to<B: FromIterator<T>>(&self) -> B {
            self.iter().cloned().collect()
        }
    }
    pub trait StringExtra {
        fn to_chars(self) -> Vec<char>;
    }
    impl StringExtra for String {
        fn to_chars(self) -> Vec<char> {
            self.chars().collect()
        }
    }
}
mod bit {
    pub fn bit_filter<'a, T: Clone>(mask: usize, v: &'a [T]) -> impl Iterator<Item = T> + 'a {
        v.iter().enumerate().filter_map(move |(i, t)| {
            if (mask >> i) & 1 == 1 {
                Some(t.clone())
            } else {
                None
            }
        })
    }
    pub fn make_bit_mask(v: &[usize]) -> usize {
        let mut mask = 0usize;
        for &i in v {
            mask |= 1 << i;
        }
        mask
    }
    pub fn bit_subsets_of_subset(sup: usize) -> impl Iterator<Item = usize> {
        (sup..=sup).chain((0..).scan(sup, move |sub, _| {
            if *sub == 0 {
                return None;
            }
            *sub = (*sub - 1) & sup;
            Some(*sub)
        }))
    }
    pub fn bit_fixed_size_subsets(k: usize, n: usize) -> impl Iterator<Item = usize> {
        (0..).scan((1 << k as i64) - 1, move |x, _| {
            if k == 0 {
                return if *x == 0 {
                    *x = 1;
                    Some(0)
                } else {
                    None
                };
            }
            if !(*x < (1 << n) as i64) {
                return None;
            }
            let ret = *x as usize;
            let t = *x | (*x - 1);
            *x = (t + 1) | (((!t & -!t) - 1) >> (x.trailing_zeros() + 1));
            Some(ret)
        })
    }
    pub fn bit_supersets_of_subset(sub: usize, n: usize) -> impl Iterator<Item = usize> {
        (0..).scan(sub, move |sup, _| {
            if !(*sup < (1 << n)) {
                return None;
            }
            let ret = *sup;
            *sup = (*sup + 1) | sub;
            Some(ret)
        })
    }
    pub fn ones(n: usize) -> usize {
        (1 << n) - 1
    }
    pub fn stands(mask: usize, k: usize) -> bool {
        (mask >> k) & 1 == 1
    }
}
mod scanner {
    use std::io::{stdin, BufReader, Bytes, Read, Stdin};
    use std::str::FromStr;
    pub struct Scanner {
        buf: Bytes<BufReader<Stdin>>,
    }
    impl Scanner {
        pub fn new() -> Scanner {
            Scanner {
                buf: BufReader::new(stdin()).bytes(),
            }
        }
        pub fn read_next<T: FromStr>(&mut self) -> Option<T> {
            let token = self
                .buf
                .by_ref()
                .map(|c| c.unwrap() as char)
                .skip_while(|c| c.is_whitespace())
                .take_while(|c| !c.is_whitespace())
                .collect::<String>();
            token.parse::<T>().ok()
        }
        pub fn read<T: FromStr>(&mut self) -> T {
            self.read_next().unwrap()
        }
        pub fn readn<T: FromStr>(&mut self, n: usize) -> Vec<T> {
            (0..n).map(|_| self.read::<T>()).collect()
        }
        pub fn chars(&mut self) -> Vec<char> {
            self.read::<String>().chars().collect()
        }
    }
}