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@@ -0,0 +1,35 @@
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+// Copyright 2016 CoreOS, Inc.
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+//
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+// Licensed under the Apache License, Version 2.0 (the "License");
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+// you may not use this file except in compliance with the License.
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+// You may obtain a copy of the License at
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+//
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+// http://www.apache.org/licenses/LICENSE-2.0
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+//
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+// Unless required by applicable law or agreed to in writing, software
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+// distributed under the License is distributed on an "AS IS" BASIS,
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+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+// See the License for the specific language governing permissions and
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+// limitations under the License.
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+
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+package main
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+
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+func getSameValue(vals map[string]int64) (int64, bool) {
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+ var rv int64
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+ for _, v := range vals {
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+ if rv == 0 {
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+ rv = v
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+ }
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+ if rv != v {
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+ return -1, false
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+ }
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+ }
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+ return rv, true
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+}
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+
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+func max(n1, n2 int64) int64 {
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+ if n1 > n2 {
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+ return n1
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+ }
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+ return n2
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+}
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