save project

e.py

+a=input()
+b=input().split(',')
+e=[]
+r=[]
+for i in range(len(b)):
+    if int(b[i])%2==0:
+        e.append(b[i])
+if len(e)==0:
+    print(-1)           
+for j in range(len(e)):
+    r.append(str(int(e[j])*int(e[j])))    
+print(','.join(r)
\ No newline at end of file