diff --git a/src/agents/diffuse.rs b/src/agents/diffuse.rs
index a656f45..a4fc81f 100644
--- a/src/agents/diffuse.rs
+++ b/src/agents/diffuse.rs
@@ -45,7 +45,6 @@ impl DiffuseAgent {
 			}
 		}
 		let mut max_dist = *dist.iter().max().unwrap();
-		println!("{:?}", dist);
 
 		'outer: loop {
 			for i in 0..11 {
diff --git a/src/util.rs b/src/util.rs
index 3dade5a..2919180 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -69,4 +69,26 @@ impl Symb {
 	pub fn is_minus(&self) -> bool {
 		self == &Self::Minus
 	}
+
+	pub fn from_char(c: &char) -> Option<Self> {
+		match c {
+			'1' => Some(Self::Number(NonZeroU8::new(1).unwrap())),
+			'2' => Some(Self::Number(NonZeroU8::new(2).unwrap())),
+			'3' => Some(Self::Number(NonZeroU8::new(3).unwrap())),
+			'4' => Some(Self::Number(NonZeroU8::new(4).unwrap())),
+			'5' => Some(Self::Number(NonZeroU8::new(5).unwrap())),
+			'6' => Some(Self::Number(NonZeroU8::new(6).unwrap())),
+			'7' => Some(Self::Number(NonZeroU8::new(7).unwrap())),
+			'8' => Some(Self::Number(NonZeroU8::new(8).unwrap())),
+			'9' => Some(Self::Number(NonZeroU8::new(9).unwrap())),
+			'0' => Some(Self::Zero),
+			'+' => Some(Self::Plus),
+			'-' => Some(Self::Minus),
+			'*' => Some(Self::Times),
+			'/' => Some(Self::Div),
+			'×' => Some(Self::Times),
+			'÷' => Some(Self::Div),
+			_ => None,
+		}
+	}
 }