From 67281a1c8088456bf4c28e4703bd399ca7a71903 Mon Sep 17 00:00:00 2001
From: pmnxis <pmnxis@gmail.com>
Date: Thu, 20 Jan 2022 20:33:24 +0900
Subject: [PATCH] Solve 06A

---
 Chapter06/Problem06A/main.rs | 39 ++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Chapter06/Problem06A/main.rs

diff --git a/Chapter06/Problem06A/main.rs b/Chapter06/Problem06A/main.rs
new file mode 100644
index 0000000..8ac43f0
--- /dev/null
+++ b/Chapter06/Problem06A/main.rs
@@ -0,0 +1,39 @@
+fn solve(line: &String) -> bool {
+    let mut k = 0;
+    for c in line.chars() {
+        match c {
+            '(' => k = k + 1,
+            ')' => k = k - 1,
+            _ => return k == 0,
+        }
+        if k < 0 {
+            return false;
+        }
+    }
+    k == 0
+}
+
+fn main() {
+    let lines = {
+        let nr_string = {
+            let mut buffer = String::new();
+            std::io::stdin().read_line(&mut buffer).expect("Fail");
+            buffer.trim().parse::<i32>().unwrap()
+        };
+
+        let mut ret: Vec<String> = Vec::new();
+        for _ in 0..nr_string {
+            let mut tmp = String::new();
+            std::io::stdin().read_line(&mut tmp).unwrap();
+            ret.push(tmp);
+        }
+        ret
+    };
+
+    for line in lines.iter() {
+        match solve(&line) {
+            true => println!("YES"),
+            false => println!("NO"),
+        };
+    }
+}