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49950 1
49951 0
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49953 -1
49954 0
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49959 0
49960 0
49961 -1
49962 0
49963 0
49964 1
49965 0
49966 0
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49972 0
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49975 0
49976 0
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49979 0
49980 1
49981 0
49982 0
49983 0
49984 0
49985 -1
49986 0
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49989 0
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49994 1
49995 -1
49996 0
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49999 0