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题目链接 将$n$个$1$和$m$个$0$组成字符串,使得在任意的前$k$个字符中,$1$的个数不能少于$0$的个数。求满足条件的字符串共有多少个。 $1\le m \le n \le 1000000$
题目链接
将$n$个$1$和$m$个$0$组成字符串,使得在任意的前$k$个字符中,$1$的个数不能少于$0$的个数。求满足条件的字符串共有多少个。
$1\le m \le n \le 1000000$
tth37
Think twice, Code once.
Jiangsu, China
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