#532665 (Rust) No.700 LOVE

• 問題: No.700 LOVE
• ユーザー: nebocco
• 提出日時: 2020-08-18 13:59:31
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 1 ms / 2,000 ms
• コード長: 2,676 bytes
• コンパイル時間: 15,451 ms
• コンパイル使用メモリ: 377,084 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-07-22 23:49:21
• 合計ジャッジ時間: 14,371 ms
• ジャッジサーバーID （参考情報）: judge3 / judge1

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	1 ms; 5,248 KB
testcase_02	AC	1 ms; 5,376 KB
testcase_03	AC	1 ms; 5,376 KB
testcase_04	AC	1 ms; 5,376 KB
testcase_05	AC	1 ms; 5,376 KB
testcase_06	AC	1 ms; 5,376 KB
testcase_07	AC	1 ms; 5,376 KB
testcase_08	AC	1 ms; 5,376 KB
testcase_09	AC	1 ms; 5,376 KB
testcase_10	AC	1 ms; 5,376 KB
testcase_11	AC	1 ms; 5,376 KB
testcase_12	AC	1 ms; 5,376 KB
testcase_13	AC	1 ms; 5,376 KB
testcase_14	AC	1 ms; 5,376 KB
testcase_15	AC	1 ms; 5,376 KB
testcase_16	AC	1 ms; 5,376 KB
testcase_17	AC	1 ms; 5,376 KB
testcase_18	AC	1 ms; 5,376 KB

コンパイルメッセージ

warning: unused variable: `m`
   --> src/main.rs:105:18
    |
105 |         n:usize, m:usize,
    |                  ^
    |
help: `m` is captured in macro and introduced a unused variable
   --> src/main.rs:26:13
    |
26  |           let $var = read_value!($iter, $t);
    |               ^^^^
...
104 | /     input!{
105 | |         n:usize, m:usize,
106 | |         s:[String; n]
107 | |     }
    | |_____- in this macro invocation
    = note: `#[warn(unused_variables)]` on by default
    = note: this warning originates in the macro `input_inner` which comes from the expansion of the macro `input` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: variable does not need to be mutable
   --> src/main.rs:10:13
    |
10  |           let mut s = {
    |               ----^
    |               |
    |               help: remove this `mut`
...
104 | /     input!{
105 | |         n:usize, m:usize,
106 | |         s:[String; n]
107 | |     }
    | |_____- in this macro invocation
    |
    = note: `#[warn(unused_mut)]` on by default
    = note: this warning originates in the macro `input` (in Nightly builds, run with -Z macro-backtrace for more info)

ソースコード

#![allow(dead_code)]
#![allow(non_snake_case)]

macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let mut 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)*}
    };
}

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)*}
    };
}

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<_>>()
    };

    ($iter:expr, chars) => {
        read_value!($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")
    };
}

struct Combination {
    MOD: u64,
    size: usize,
    fact: Vec<u64>,
    inv_fact: Vec<u64>
}

impl Combination {
    fn new(size: usize, MOD: u64) -> Self {
        let mut fact = vec![1; size + 1];
        let mut inv_fact = vec![1; size + 1];
        for i in 1..size+1 {
            fact[i] = fact[i-1] * i as u64 % MOD;
        }
        inv_fact[size] = Self::modpow(fact[size], MOD-2, MOD);
        for i in (1..size+1).rev() {
            inv_fact[i-1] = inv_fact[i] * i as u64 % MOD;
        }
        Combination {
            MOD, size,
            fact, inv_fact
        }
    }

    fn modpow(mut x:u64, mut y:u64, m:u64) -> u64 {
        let mut res: u64 = 1;
        while y > 0 {
            if y & 1 > 0 {
                res = res * x % m;
            }
            x = x * x % m;
            y >>= 1;
        }
        res
    }

    fn modinv(x: u64, m:u64) -> u64 {
        Self::modpow(x, m-2, m)
    }

    fn nPr (&self, n:usize, r:usize) -> u64 {
        if n < r { return 0 };
        self.fact[n] * self.inv_fact[n-r] % self.MOD
    }
    fn nCr (&self, n:usize, r:usize) -> u64 {
        if n < r { return 0 };
        self.fact[n] * self.inv_fact[r] % self.MOD * self.inv_fact[n-r] % self.MOD
    }
}

fn main() {
    input!{
        n:usize, m:usize,
        s:[String; n]
    }
    for i in 0..n {
        if s[i].contains("LOVE") {
            println!("YES");
            return
        }
    }
    println!("NO");
}