Solve B in arc142

Author: k-yomo

atcoder/rust/arc142/Cargo.lock

@@ -0,0 +1,80 @@
+[package]
+name = "arc142"
+version = "0.1.0"
+authors = ["k-yomo <kanji.yy@gmail.com>"]
+edition = "2018"
+
+[package.metadata.cargo-compete]
+config = "../compete.toml"
+
+[package.metadata.cargo-compete.bin]
+a = { name = "arc142-a", problem = { platform = "atcoder", contest = "arc142", index = "A", url = "https://atcoder.jp/contests/arc142/tasks/arc142_a" } }
+b = { name = "arc142-b", problem = { platform = "atcoder", contest = "arc142", index = "B", url = "https://atcoder.jp/contests/arc142/tasks/arc142_b" } }
+c = { name = "arc142-c", problem = { platform = "atcoder", contest = "arc142", index = "C", url = "https://atcoder.jp/contests/arc142/tasks/arc142_c" } }
+d = { name = "arc142-d", problem = { platform = "atcoder", contest = "arc142", index = "D", url = "https://atcoder.jp/contests/arc142/tasks/arc142_d" } }
+e = { name = "arc142-e", problem = { platform = "atcoder", contest = "arc142", index = "E", url = "https://atcoder.jp/contests/arc142/tasks/arc142_e" } }
+f = { name = "arc142-f", problem = { platform = "atcoder", contest = "arc142", index = "F", url = "https://atcoder.jp/contests/arc142/tasks/arc142_f" } }
+
+[[bin]]
+name = "arc142-a"
+path = "src/bin/a.rs"
+
+[[bin]]
+name = "arc142-b"
+path = "src/bin/b.rs"
+
+[[bin]]
+name = "arc142-c"
+path = "src/bin/c.rs"
+
+[[bin]]
+name = "arc142-d"
+path = "src/bin/d.rs"
+
+[[bin]]
+name = "arc142-e"
+path = "src/bin/e.rs"
+
+[[bin]]
+name = "arc142-f"
+path = "src/bin/f.rs"
+[dependencies]
+num = "=0.2.1"
+num-bigint = "=0.2.6"
+num-complex = "=0.2.4"
+num-integer = "=0.1.42"
+num-iter = "=0.1.40"
+num-rational = "=0.2.4"
+num-traits = "=0.2.11"
+num-derive = "=0.3.0"
+ndarray = "=0.13.0"
+nalgebra = "=0.20.0"
+alga = "=0.9.3"
+libm = "=0.2.1"
+rand = { version = "=0.7.3", features = ["small_rng"] }
+getrandom = "=0.1.14"
+rand_chacha = "=0.2.2"
+rand_core = "=0.5.1"
+rand_hc = "=0.2.0"
+rand_pcg = "=0.2.1"
+rand_distr = "=0.2.2"
+petgraph = "=0.5.0"
+indexmap = "=1.3.2"
+regex = "=1.3.6"
+lazy_static = "=1.4.0"
+ordered-float = "=1.0.2"
+ascii = "=1.0.0"
+permutohedron = "=0.2.4"
+superslice = "=1.0.0"
+itertools = "=0.9.0"
+itertools-num = "=0.1.3"
+maplit = "=1.0.2"
+either = "=1.5.3"
+im-rc = "=14.3.0"
+fixedbitset = "=0.2.0"
+bitset-fixed = "=0.1.0"
+proconio = { version = "=0.3.6", features = ["derive"] }
+text_io = "=0.1.8"
+whiteread = "=0.5.0"
+rustc-hash = "=1.1.0"
+smallvec = "=1.2.0"

atcoder/rust/arc142/Cargo.toml

@@ -0,0 +1,19 @@
+#![allow(unused_imports)]
+
+use std::cmp::*;
+use std::collections::*;
+use std::io::Write;
+use std::ops::Bound::*;
+
+use itertools::*;
+use itertools::__std_iter::once;
+use itertools_num::ItertoolsNum;
+use proconio::*;
+use proconio::marker::*;
+use superslice::*;
+
+fn main() {
+    input! {
+
+    }
+}

atcoder/rust/arc142/src/bin/a.rs

@@ -0,0 +1,39 @@
+#![allow(unused_imports)]
+
+use std::cmp::*;
+use std::collections::*;
+use std::io::Write;
+use std::ops::Bound::*;
+
+use itertools::*;
+use itertools::__std_iter::once;
+use itertools_num::ItertoolsNum;
+use proconio::*;
+use proconio::marker::*;
+use superslice::*;
+
+fn main() {
+    input! {
+        n: usize,
+    }
+
+    for i in 1..=n {
+        let mut nums = vec![];
+        let mut reverse = false;
+        let mut i = 0;
+        let mut count = 0;
+        while count < n {
+            if reverse {
+                print!("{} ", nums[n-i-1]);
+                i += 1;
+            } else {
+                print!("{} ", nums[i]);
+            }
+            count += 1;
+            reverse = !reverse;
+        }
+        println!(nums.map(|i| i.to_string()).jon(" "))
+    }
+}
+
+

atcoder/rust/arc142/src/bin/b.rs

@@ -0,0 +1,19 @@
+#![allow(unused_imports)]
+
+use std::cmp::*;
+use std::collections::*;
+use std::io::Write;
+use std::ops::Bound::*;
+
+use itertools::*;
+use itertools::__std_iter::once;
+use itertools_num::ItertoolsNum;
+use proconio::*;
+use proconio::marker::*;
+use superslice::*;
+
+fn main() {
+    input! {
+
+    }
+}

atcoder/rust/arc142/src/bin/c.rs

@@ -0,0 +1,19 @@
+#![allow(unused_imports)]
+
+use std::cmp::*;
+use std::collections::*;
+use std::io::Write;
+use std::ops::Bound::*;
+
+use itertools::*;
+use itertools::__std_iter::once;
+use itertools_num::ItertoolsNum;
+use proconio::*;
+use proconio::marker::*;
+use superslice::*;
+
+fn main() {
+    input! {
+
+    }
+}

atcoder/rust/arc142/src/bin/d.rs

@@ -0,0 +1,19 @@
+#![allow(unused_imports)]
+
+use std::cmp::*;
+use std::collections::*;
+use std::io::Write;
+use std::ops::Bound::*;
+
+use itertools::*;
+use itertools::__std_iter::once;
+use itertools_num::ItertoolsNum;
+use proconio::*;
+use proconio::marker::*;
+use superslice::*;
+
+fn main() {
+    input! {
+
+    }
+}

atcoder/rust/arc142/src/bin/e.rs

@@ -0,0 +1,19 @@
+#![allow(unused_imports)]
+
+use std::cmp::*;
+use std::collections::*;
+use std::io::Write;
+use std::ops::Bound::*;
+
+use itertools::*;
+use itertools::__std_iter::once;
+use itertools_num::ItertoolsNum;
+use proconio::*;
+use proconio::marker::*;
+use superslice::*;
+
+fn main() {
+    input! {
+
+    }
+}

atcoder/rust/arc142/src/bin/f.rs

@@ -0,0 +1,23 @@
+---
+type: Batch
+timelimit: 2s
+match: Lines
+
+cases:
+  - name: sample1
+    in: |
+      1420 142
+    out: |
+      3
+  - name: sample2
+    in: |
+      1419 142
+    out: |
+      2
+  - name: sample3
+    in: |
+      6 19
+    out: |
+      0
+
+extend: []

atcoder/rust/arc142/testcases/a.yml

@@ -0,0 +1,21 @@
+---
+type: Batch
+timelimit: 2s
+match: Lines
+
+cases:
+  - name: sample1
+    in: |
+      2
+    out: |
+      1 2
+      3 4
+  - name: sample2
+    in: |
+      3
+    out: |
+      1 2 3
+      5 4 6
+      7 8 9
+
+extend: []