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lambda x,y=0,z={}:next(i-z[y]for i in range(len(x)+1)if y in z or((zor[z:=z|{y:i})and(,y:=(y+x[y])%len(x))&0)]*0)
Attempt This Online!Attempt This Online!
lambda x,y=0,z={}:next(i-z[y]for i in range(len(x)+1)if y in z or((z:=z|{y:i})and(y:=(y+x[y])%len(x))&0))
Attempt This Online!
lambda x,y=0,z={}:next(i-z[y]for i in range(len(x)+1)if y in z or[z:=z|{y:i},y:=(y+x[y])%len(x)]*0)
lambda x,y=0,z={}:next(i-z[y]for i in range(len(x)+1)if z.get(y,-1)+1or in z or((z:=z|{y:i})and(y:=(y+x[y])%len(x))&0))
lambda x,y=0,z={}:next(i-z[y]for i in range(len(x)+1)if z.get(y,-1)+1or((z:=z|{y:i})and(y:=(y+x[y])%len(x))&0))
lambda x,y=0:(z:=,z={},:next(i-z[y]for i in range(len(x)+1)if z.get(y,-1)+1or((z:=z|{y:i})and(y:=(y+x[y])%len(x))&0)))[1]
lambda x,y=0:(z:={},next(i-z[y]for i in range(len(x)+1)if z.get(y,-1)+1or((z:=z|{y:i})and(y:=(y+x[y])%len(x))&0)))[1]
