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levieProekti/Olymp2020/uoi/vusIkolo.py

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+kilkist = int(input())
+kolo = input().split()
+x = 0
+canornot = "No"
+perviposl = [kolo[0], kolo[-1]]
+
+for i in range(kilkist):
+    if i == kilkist:
+        i = 0
+    iplusodin = i + 1
+    iplusdwa = i + 2
+    if iplusdwa >= kilkist - 1:
+        iplusdwa = iplusdwa - (kilkist - 1)
+    if iplusodin >= kilkist - 1:
+        iplusodin = iplusodin - (kilkist - 1)
+    if kolo[i] == kolo[iplusodin] and kolo[i] == kolo[iplusdwa]:
+        canornot = "Yes"
+        print(canornot)
+        exit()
+
+    if kolo[i] == kolo[iplusodin]:
+        x = kolo[i]
+        for j in range(i + 1, kilkist):
+            if j == kilkist:
+                j = 0
+            jplusodin = j + 1
+            if jplusodin >= kilkist - 1:
+                jplusodin = jplusodin - kilkist
+            if kolo[j] == x and kolo[jplusodin] == x:
+                canornot = "Yes"
+                print(canornot)
+                exit()
+
+print(canornot)