1 files changed, 5 insertions, 0 deletions

diff --git a/068.py b/068.py
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index 0000000..2357156
--- /dev/null
+++ b/068.py
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+# 16-digit string  ->  10 on the outside (used once)
+
+# solved on paper by "trial-and-error":
+print "6531031914842725"
+