s:*(!0;0){$[*|x;(*x;0);y~"!";(*x;1);((*x),y;0)]}/*0:`day09   / kill !-escaping

+/(c,0)*+\((s="{"),0)-0,c:"}"=s:s@&~v:{1&x+y}\(s="<")-s=">"
1+(+/v)-+/>':v

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