diff --git a/2018/loc.svg b/2018/loc.svg
index d05c0b6..9666dd1 100644
--- a/2018/loc.svg
+++ b/2018/loc.svg
@@ -32,10 +32,10 @@ z
       <defs>
        <path d="M 0 0 
 L 0 3.5 
-" id="m1883bfe898" style="stroke:#000000;stroke-width:0.8;"/>
+" id="md180c468f1" style="stroke:#000000;stroke-width:0.8;"/>
       </defs>
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="60.305455" xlink:href="#m1883bfe898" y="307.584"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="60.305455" xlink:href="#md180c468f1" y="307.584"/>
       </g>
      </g>
      <g id="text_1">
@@ -71,7 +71,7 @@ z
     <g id="xtick_2">
      <g id="line2d_2">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="127.941818" xlink:href="#m1883bfe898" y="307.584"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="127.941818" xlink:href="#md180c468f1" y="307.584"/>
       </g>
      </g>
      <g id="text_2">
@@ -110,7 +110,7 @@ z
     <g id="xtick_3">
      <g id="line2d_3">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="195.578182" xlink:href="#m1883bfe898" y="307.584"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="195.578182" xlink:href="#md180c468f1" y="307.584"/>
       </g>
      </g>
      <g id="text_3">
@@ -139,7 +139,7 @@ z
     <g id="xtick_4">
      <g id="line2d_4">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="263.214545" xlink:href="#m1883bfe898" y="307.584"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="263.214545" xlink:href="#md180c468f1" y="307.584"/>
       </g>
      </g>
      <g id="text_4">
@@ -153,7 +153,7 @@ z
     <g id="xtick_5">
      <g id="line2d_5">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="330.850909" xlink:href="#m1883bfe898" y="307.584"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="330.850909" xlink:href="#md180c468f1" y="307.584"/>
       </g>
      </g>
      <g id="text_5">
@@ -193,7 +193,7 @@ z
     <g id="xtick_6">
      <g id="line2d_6">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="398.487273" xlink:href="#m1883bfe898" y="307.584"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="398.487273" xlink:href="#md180c468f1" y="307.584"/>
       </g>
      </g>
      <g id="text_6">
@@ -286,10 +286,10 @@ z
       <defs>
        <path d="M 0 0 
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-" id="m6ecc85d2eb" style="stroke:#000000;stroke-width:0.8;"/>
+" id="mf0f7226eb2" style="stroke:#000000;stroke-width:0.8;"/>
       </defs>
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#m6ecc85d2eb" y="295.488"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#mf0f7226eb2" y="295.488"/>
       </g>
      </g>
      <g id="text_8">
@@ -302,7 +302,7 @@ L -3.5 0
     <g id="ytick_2">
      <g id="line2d_8">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#m6ecc85d2eb" y="247.488"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#mf0f7226eb2" y="247.488"/>
       </g>
      </g>
      <g id="text_9">
@@ -316,7 +316,7 @@ L -3.5 0
     <g id="ytick_3">
      <g id="line2d_9">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#m6ecc85d2eb" y="199.488"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#mf0f7226eb2" y="199.488"/>
       </g>
      </g>
      <g id="text_10">
@@ -331,7 +331,7 @@ L -3.5 0
     <g id="ytick_4">
      <g id="line2d_10">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#m6ecc85d2eb" y="151.488"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#mf0f7226eb2" y="151.488"/>
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@@ -346,7 +346,7 @@ L -3.5 0
     <g id="ytick_5">
      <g id="line2d_11">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#m6ecc85d2eb" y="103.488"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#mf0f7226eb2" y="103.488"/>
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      </g>
      <g id="text_12">
@@ -361,7 +361,7 @@ L -3.5 0
     <g id="ytick_6">
      <g id="line2d_12">
       <g>
-       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#m6ecc85d2eb" y="55.488"/>
+       <use style="stroke:#000000;stroke-width:0.8;" x="57.6" xlink:href="#mf0f7226eb2" y="55.488"/>
       </g>
      </g>
      <g id="text_13">
@@ -577,7 +577,7 @@ z
     </g>
    </g>
    <g id="line2d_13">
-    <path clip-path="url(#pd17c3d6773)" d="M 73.832727 282.048 
+    <path clip-path="url(#p26e262efc8)" d="M 73.832727 282.048 
 L 87.36 277.248 
 L 100.887273 270.528 
 L 114.414545 269.568 
@@ -593,7 +593,7 @@ L 236.16 265.728
 L 249.687273 277.248 
 L 263.214545 251.328 
 L 276.741818 259.008 
-L 290.269091 259.008 
+L 290.269091 265.728 
 L 303.796364 289.728 
 L 317.323636 289.728 
 L 330.850909 289.728 
@@ -605,7 +605,7 @@ L 398.487273 289.728
 " style="fill:none;stroke:#1f77b4;stroke-linecap:square;stroke-width:1.5;"/>
    </g>
    <g id="line2d_14">
-    <path clip-path="url(#pd17c3d6773)" d="M 73.832727 295.488 
+    <path clip-path="url(#p26e262efc8)" d="M 73.832727 295.488 
 L 87.36 293.568 
 L 100.887273 295.488 
 L 114.414545 295.488 
@@ -633,7 +633,7 @@ L 398.487273 295.488
 " style="fill:none;stroke:#ff7f0e;stroke-linecap:square;stroke-width:1.5;"/>
    </g>
    <g id="line2d_15">
-    <path clip-path="url(#pd17c3d6773)" d="M 73.832727 233.088 
+    <path clip-path="url(#p26e262efc8)" d="M 73.832727 233.088 
 L 87.36 218.688 
 L 100.887273 208.128 
 L 114.414545 191.808 
@@ -649,7 +649,7 @@ L 236.16 95.808
 L 249.687273 205.248 
 L 263.214545 53.568 
 L 276.741818 86.208 
-L 290.269091 142.848 
+L 290.269091 165.888 
 L 303.796364 277.248 
 L 317.323636 277.248 
 L 330.850909 277.248 
@@ -870,7 +870,7 @@ L 348.72625 83.926688
   </g>
  </g>
  <defs>
-  <clipPath id="pd17c3d6773">
+  <clipPath id="p26e262efc8">
    <rect height="266.112" width="357.12" x="57.6" y="41.472"/>
   </clipPath>
  </defs>
diff --git a/2018/src/day17.rs b/2018/src/day17.rs
index a317fa1..dd484b7 100644
--- a/2018/src/day17.rs
+++ b/2018/src/day17.rs
@@ -60,33 +60,6 @@ impl Day17 {
         };
     }
 
-    #[allow(unused)]
-    fn map(&self) {
-        let (xmin, xmax) = match self.clays.iter().map(|(x, _)| *x).minmax() {
-            MinMaxResult::MinMax(a, b) => (a, b),
-            _ => panic!(),
-        };
-
-        println!("{}, {} to {}, {}", xmin, self.ymin, xmax, self.ymax);
-
-        for y in self.ymin..=self.ymax {
-            let mut buf = String::with_capacity(xmax - xmin + 1);
-            for x in xmin..=xmax {
-                let pos = (x, y);
-                if self.clays.contains(&pos) {
-                    buf.push('#');
-                } else if self.contained.contains(&pos) {
-                    buf.push('~');
-                } else if self.flowing.contains(&pos) {
-                    buf.push('|');
-                } else {
-                    buf.push(' ');
-                }
-            }
-            println!("{}", buf);
-        }
-    }
-
     fn descend(&mut self, pos: Coordinate) {
         let (x, y) = pos;
 
@@ -152,25 +125,21 @@ impl Solution for Day17 {
     fn part1(&mut self, input: &mut Read) -> String {
         self.read_input(input);
 
-
         self.descend((500, 0));
 
-        let range_filter = |&&(_, y): &&(usize, usize)| y >= self.ymin && y <= self.ymax;
-
-        let result = self.contained.iter().filter(range_filter).count()
-            + self.flowing.iter().filter(range_filter).count();
+        let result = self.contained.iter()
+            .chain(self.flowing.iter())
+            .filter(|&&(_, y)| y >= self.ymin && y <= self.ymax).count();
         format!("{}", result)
     }
 
     fn part2(&mut self, input: &mut Read) -> String {
         self.read_input(input);
 
-
         self.descend((500, 0));
 
-        let range_filter = |&&(_, y): &&(usize, usize)| y >= self.ymin && y <= self.ymax;
-
-        let result = self.contained.iter().filter(range_filter).count();
+        let result = self.contained.iter()
+            .filter(|&&(_, y)| y >= self.ymin && y <= self.ymax).count();
         format!("{}", result)
     }
 }