--- a/guessing/src/main.rs	Mon Jan 11 19:17:21 2021 +0900
+++ b/guessing/src/main.rs	Tue Jan 12 10:35:31 2021 +0900
@@ -1,3 +1,21 @@
-fn main() {
+// #![feature(termination_trait)]
+
+fn main1() -> Option<u32> {
+    use std::collections::HashMap;
+
+    let mut scores = HashMap::new();
+
+    scores.insert(String::from("Blue"), 10);
+    scores.insert(String::from("Yellow"), 50);
+
+    let team_name = String::from("Blue");
+    let score = scores.get(&team_name)?;
+    println!("result {}",score);
+
+    Some(1)
+}
+fn main() -> std::io::Result<()> {
     println!("Hello, guessing!");
+    main1();
+    Ok(())
 }

--- a/src/t01guessing/src/main.rs	Mon Jan 11 19:17:21 2021 +0900
+++ b/src/t01guessing/src/main.rs	Tue Jan 12 10:35:31 2021 +0900
@@ -14,6 +14,24 @@
         println!("Please input your guess.");
 
         let mut guess = String::new();
+        // let a = [[1.0,2.0],[3.0,0.1]];
+        // println!("a = {} {}",a[1][1],a[0][0]);
+        let /* mut */ s1 = String::from("hello");
+        let s2 = s1;
+        let hello = "Здравствуйте";
+        // s1 = s2;
+        let answer = match hello.chars().nth(1) {
+            Some(c) => c,
+            None => continue,
+        };
+
+        println!("{}, world! {}", s2,answer);
+
+        let mut j = 0;
+        for i in 0 .. 10 {
+            j += i;
+        }
+        println!("{}",j);
 
         io::stdin()
             .read_line(&mut guess)