add to gothib

test_anxiety.py

@@ -0,0 +1,19 @@
+average = int(input(""))
+
+assignments = int(input(""))
+
+"""
+(average*2+x)/3=80
+average*2+x=240
+x=240-average*2
+
+"""
+
+required = 80*(assignments+1) - average*assignments
+
+if required > 100:
+    print("-1")
+elif required < 0:
+    print("0")
+else:
+    print(required)