math
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6 defs 61 6 defs 71 7 defs 66 7 defs 66 3 defs 70 7 defs 73 7 defs 76 3 defs 62 6 defs 66 6 defs 62 6 defs 62 3 defs 60 2 defs 61 7 defs 67 5 defs 61 6 defs 59 3 defs 55 6 defs 57 3 defs 56 7 defs 57 4 defs 88 5 defs 57 7 defs 56 7 defs 68 5 defs 71 7 defs 63 3 defs 57 5 defs 60 6 defs 61 6 defs 58