Penalize wrong solution

sho/num.py

@@ -32,6 +32,13 @@ def cover_sum(sol, domain_width, sensor_range, dim):
     cov = pb.coverage(domain, sensors, sensor_range*domain_width)
     s = np.sum(cov)
     assert(s >= len(sensors))
+    if len(sol) > dim:
+        s *= 0.5
+    for v in sol:
+        if v < 0:
+            s += v/domain_width
+        if v >= domain_width:
+            s -= (v-domain_width)/domain_width
     return s