結果
問題 | No.1667 Forest |
ユーザー | phspls |
提出日時 | 2022-10-04 00:35:45 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 735 ms / 3,000 ms |
コード長 | 1,685 bytes |
コンパイル時間 | 13,367 ms |
コンパイル使用メモリ | 376,932 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-08 17:43:38 |
合計ジャッジ時間 | 18,294 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 735 ms
5,248 KB |
testcase_01 | AC | 719 ms
5,248 KB |
testcase_02 | AC | 710 ms
5,376 KB |
testcase_03 | AC | 5 ms
5,376 KB |
testcase_04 | AC | 691 ms
5,376 KB |
testcase_05 | AC | 397 ms
5,376 KB |
testcase_06 | AC | 233 ms
5,376 KB |
testcase_07 | AC | 132 ms
5,376 KB |
testcase_08 | AC | 58 ms
5,376 KB |
testcase_09 | AC | 36 ms
5,376 KB |
testcase_10 | AC | 16 ms
5,376 KB |
testcase_11 | AC | 2 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 |
コンパイルメッセージ
warning: variable `MOD` should have a snake case name --> src/main.rs:2:37 | 2 | fn power(base: usize, times: usize, MOD: usize) -> usize { | ^^^ | = note: `#[warn(non_snake_case)]` on by default help: rename the identifier or convert it to a snake case raw identifier | 2 | fn power(base: usize, times: usize, r#mod: usize) -> usize { | ~~~~~ warning: variable `MOD` should have a snake case name --> src/main.rs:9:26 | 9 | fn fact_inv(size: usize, MOD: usize) -> (Vec<usize>, Vec<usize>) { | ^^^ | help: rename the identifier or convert it to a snake case raw identifier | 9 | fn fact_inv(size: usize, r#mod: usize) -> (Vec<usize>, Vec<usize>) { | ~~~~~ warning: variable `MOD` should have a snake case name --> src/main.rs:26:73 | 26 | fn comb(n: usize, r: usize, facts: &Vec<usize>, fact_invs: &Vec<usize>, MOD: usize) -> usize { | ^^^ | help: rename the identifier or convert it to a snake case raw identifier | 26 | fn comb(n: usize, r: usize, facts: &Vec<usize>, fact_invs: &Vec<usize>, r#mod: usize) -> usize { | ~~~~~ warning: variable `MOD` should have a snake case name --> src/main.rs:35:9 | 35 | let MOD = temp[1]; | ^^^ | help: rename the identifier or convert it to a snake case raw identifier | 35 | let r#mod = temp[1]; | ~~~~~
ソースコード
fn power(base: usize, times: usize, MOD: usize) -> usize { if times == 0 { return 1usize; } if times == 1 { return base; } let temp = power(base, times/2, MOD); temp * temp % MOD * power(base, times%2, MOD) % MOD } fn fact_inv(size: usize, MOD: usize) -> (Vec<usize>, Vec<usize>) { let mut facts = vec![0usize; size+1]; let mut fact_invs = vec![0usize; size+1]; let mut invs = vec![0usize; size+1]; facts[0] = 1; facts[1] = 1; fact_invs[0] = 1; fact_invs[1] = 1; invs[1] = 1; for i in 2..=size { facts[i] = facts[i-1] * i % MOD; invs[i] = MOD - invs[MOD % i] * (MOD / i) % MOD; fact_invs[i] = fact_invs[i - 1] * invs[i] % MOD; } (facts, fact_invs) } fn comb(n: usize, r: usize, facts: &Vec<usize>, fact_invs: &Vec<usize>, MOD: usize) -> usize { facts[n] * fact_invs[r] % MOD * fact_invs[n-r] % MOD } fn main() { let mut temp = String::new(); std::io::stdin().read_line(&mut temp).ok(); let temp: Vec<usize> = temp.trim().split_whitespace().map(|s| s.parse().unwrap()).collect(); let n = temp[0]; let MOD = temp[1]; let (facts, fact_invs) = fact_inv(1000, MOD); let mut dp = vec![vec![0usize; n]; n+1]; dp[0][0] = 1; for i in 0..n { for j in 0..=i { dp[i+1][j] += dp[i][j]; dp[i+1][j] %= MOD; for k in 2..=n { if k+j-1 >= n || i+k > n { break; } dp[i+k][j+k-1] += dp[i][j] * comb(n-1-i, k-1, &facts, &fact_invs, MOD) % MOD * power(k, k-2, MOD) % MOD; dp[i+k][j+k-1] %= MOD; } } } for i in 0..n { println!("{}", dp[n][i]); } }