結果

問題 No.2324 Two Countries within UEC
ユーザー 👑 zeronosu77108zeronosu77108
提出日時 2023-05-28 14:11:13
言語 Rust
(1.77.0)
結果
WA  
実行時間 -
コード長 3,050 bytes
コンパイル時間 5,727 ms
コンパイル使用メモリ 150,164 KB
実行使用メモリ 16,228 KB
最終ジャッジ日時 2023-08-27 09:11:42
合計ジャッジ時間 7,559 ms
ジャッジサーバーID
(参考情報)
judge12 / judge14
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 198 ms
15,428 KB
testcase_01 AC 202 ms
15,684 KB
testcase_02 AC 37 ms
4,380 KB
testcase_03 AC 150 ms
12,296 KB
testcase_04 AC 171 ms
13,284 KB
testcase_05 AC 39 ms
4,616 KB
testcase_06 AC 71 ms
6,644 KB
testcase_07 AC 32 ms
4,380 KB
testcase_08 AC 150 ms
12,296 KB
testcase_09 AC 156 ms
12,532 KB
testcase_10 AC 203 ms
14,968 KB
testcase_11 AC 196 ms
15,404 KB
testcase_12 AC 61 ms
6,188 KB
testcase_13 AC 61 ms
6,156 KB
testcase_14 AC 36 ms
4,380 KB
testcase_15 AC 31 ms
4,380 KB
testcase_16 AC 136 ms
11,168 KB
testcase_17 AC 89 ms
7,716 KB
testcase_18 AC 39 ms
4,596 KB
testcase_19 AC 200 ms
15,400 KB
testcase_20 AC 26 ms
4,376 KB
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 AC 200 ms
14,968 KB
testcase_26 WA -
testcase_27 WA -
testcase_28 WA -
testcase_29 WA -
testcase_30 WA -
testcase_31 AC 1 ms
4,376 KB
testcase_32 AC 1 ms
4,380 KB
testcase_33 AC 1 ms
4,380 KB
testcase_34 AC 1 ms
4,380 KB
testcase_35 AC 1 ms
4,376 KB
testcase_36 AC 1 ms
4,380 KB
testcase_37 AC 1 ms
4,380 KB
testcase_38 AC 1 ms
4,380 KB
testcase_39 AC 1 ms
4,376 KB
testcase_40 AC 1 ms
4,384 KB
testcase_41 WA -
testcase_42 WA -
権限があれば一括ダウンロードができます
コンパイルメッセージ
warning: unused import: `std::collections::BTreeMap`
 --> Main.rs:1:5
  |
1 | use std::collections::BTreeMap;
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused variable: `n`
  --> Main.rs:10:9
   |
10 |     let n = sc.usize();
   |         ^ help: if this is intentional, prefix it with an underscore: `_n`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: variable does not need to be mutable
  --> Main.rs:18:13
   |
18 |         let mut f = sc.usize();
   |             ----^
   |             |
   |             help: remove this `mut`
   |
   = note: `#[warn(unused_mut)]` on by default

warning: 3 warnings emitted

ソースコード

diff #

use std::collections::BTreeMap;

fn main() {
    let mut sc = Scanner::new();
    let t = 1;
    for _ in 0..t { solve(&mut sc); }
}

fn solve(sc:&mut Scanner) {
    let n = sc.usize();
    let m = sc.usize();
    let p = sc.usize();
    let q = sc.usize();


    for _ in 0..q {
        let x = sc.usize();
        let mut f = sc.usize();

        // x * y \= f
        // y = f * x^-1
        // y が何個あるか
        let inv = pow(x % p, p-2, p);
        let mut y = (f * inv) % p;
        if y == 0 { y = p; }

        let ans = m/p + if m%p >= y { 1 } else { 0 };
        println!("{}", ans);
    }
}
/*
1 11 2 2
1 0
1 1
 */
fn pow(a:usize, x:usize, p:usize) -> usize {
    let mut res = 1;
    let mut a = a;
    let mut x = x;
    while x > 0 {
        if x & 1 == 1 {
            res = res * a % p;
        }
        a = a * a % p;
        x >>= 1;
    }
    res
}

struct Scanner { s : std::collections::VecDeque<String> } #[allow(unused)] impl Scanner { fn new() -> Self { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); Self { s : s.split_whitespace().map(|s| s.to_string()).collect() } } fn reload(&mut self) -> () { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); self.s = s.split_whitespace().map(|s| s.to_string()).collect(); } fn usize(&mut self) -> usize { self.input() } fn usize1(&mut self) -> usize { self.input::<usize>() - 1 } fn isize(&mut self) -> isize { self.input() } fn i32(&mut self) -> i32 { self.input() } fn i64(&mut self) -> i64 { self.input() } fn i128(&mut self) -> i128 { self.input() } fn u8(&mut self) -> u8 { self.input() } fn u32(&mut self) -> u32 { self.input() } fn u64(&mut self) -> u64 { self.input() } fn u128(&mut self) -> u128 { self.input() } fn edge(&mut self) -> (usize, usize) { (self.usize1(), self.usize1()) } fn edges(&mut self, m : usize) -> Vec<(usize, usize)> { let mut e = Vec::with_capacity(m); for _ in 0..m { e.push(self.edge()); } e } fn wedge<T:std::str::FromStr>(&mut self) -> (usize, usize, T) { (self.usize1(), self.usize1(), self.input()) } fn wedges<T:std::str::FromStr>(&mut self, m : usize) -> Vec<(usize, usize, T)> { let mut e = Vec::with_capacity(m); for _ in 0..m { e.push(self.wedge()); } e } fn input<T>(&mut self) -> T where T: std::str::FromStr { if self.s.is_empty() { self.reload(); } if let Some(head) = self.s.pop_front() { head.parse::<T>().ok().unwrap() } else { panic!() } } fn tuple<T, U>(&mut self) -> (T, U) where T: std::str::FromStr, U: std::str::FromStr { (self.input(), self.input()) } fn vec<T>(&mut self, n: usize) -> Vec<T> where T: std::str::FromStr { if self.s.is_empty() { self.reload(); } self.s.drain(..n).map(|s| s.parse::<T>().ok().unwrap() ).collect::<Vec<T>>() } fn nvec<T>(&mut self) -> Vec<T> where T: std::str::FromStr { let n : usize = self.input(); self.vec(n) } fn chars(&mut self) -> Vec<char> { let s : String = self.input(); s.chars().collect() } fn bytes(&mut self) -> Vec<u8> { let s : String = self.input(); s.bytes().collect() } }
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