diff --git a/2020/sketch_2020_04_30a/sketch_2020_04_30a.png b/2020/sketch_2020_04_30a/sketch_2020_04_30a.png
new file mode 100644
index 00000000..8fd7e860
Binary files /dev/null and b/2020/sketch_2020_04_30a/sketch_2020_04_30a.png differ
diff --git a/2020/sketch_2020_04_30a/sketch_2020_04_30a.pyde b/2020/sketch_2020_04_30a/sketch_2020_04_30a.pyde
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--- /dev/null
+++ b/2020/sketch_2020_04_30a/sketch_2020_04_30a.pyde
@@ -0,0 +1,42 @@
+
+circulos = []  # uma lista vazia
+tam_min = 2
+tam_max = 130
+
+
+def setup():
+    size(600, 400)
+    colorMode(HSB)
+    noStroke()
+          
+              
+def draw():
+    background(0)
+    for x, y, t in circulos:
+        fill(t * 2 - 4, 255, 255)
+        circle(x, y, t)
+        
+    tamanho, x, y = -1, 0, 0
+    while colisao(x, y, tamanho):
+        tamanho = random(tam_min, tam_max)
+        x = random(tamanho / 2, width - tamanho / 2)
+        y = random(tamanho / 2, height - tamanho / 2)
+    circulos.append((x, y, tamanho))
+    print(tamanho) 
+            
+                                                    
+def colisao(x, y, tamanho):
+        if tamanho < 0:
+            return True
+        for xc, yc, tamanho_c in circulos:
+            if dist(x, y, xc, yc) < tamanho / 2 + tamanho_c / 2:
+                 return True
+        return False
+            
+            
+def keyPressed():
+    if key == ' ':
+        circulos[:] = []
+    if key == 'p':
+        saveFrame('######.png')
+