import sys
# A simple reducer for word counting
# Note- you wouldn't actually want to do this for a potentially
# unbounded number of tokens.

counts = {}
for line in sys.stdin:
    (token, count) = line.split('\t')
    counts[token] = counts.get(token, 0) + int(count)
    
# The sort command here does it in decreasing frequency order (most frequent 
# words appear first), and alphabetically within tokens that occur the same 
# number of times.
for (token, count) in sorted(counts.items(), key = lambda x: (-x[1], x[0])):
    print '%s\t%s' % (token, count)