反正就是失恋了无所事事,管理monk别删,whoever删whose family=0,man whoever删who jiji=0
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sort+d
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jisuanti(H2O)
?set back
then cnt
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fanhui available greedy
find 1st leq cur
if rep already, then find nxt
if no, cur=0
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pair 2 nega gg
if no, odd nega: min nega ok, others gg
ok nega: nega gg with nxt one or nega ok, pick one better
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if ok, then the whole
if not ok, then the front/back which can xianjie the longest
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birth RE, Ga Y me a holiday
I'm Ga Y but I'm not a Ga Y.