Scan driving circuit and driving method thereof, array substrate and display device

A sub-circuit of a scan driving circuit, wherein the scan driving circuit comprises output ends at m stages, the sub-circuit comprises a shift register circuit and k input circuits, the input circuits in the scan driving circuit have m stages, and k is greater than 1 and less than m;

• wherein a first end of the input circuit at the i-th stage is connected to the output end at the (i−1)-th stage, and i is any integer greater than 1 and less than m+1;
• the shift register circuits are respectively connected to k output ends and connected to second ends of the k input circuits, the k input circuits have a same combination of stage numbers as the k output ends, all of the stage numbers in the same combination of stage numbers have a same parity;
• the shift register circuit is configured to output a scanning signal to one of the connected k output ends, and outputting the scanning signal to which one of the output ends is indicated by an external control signal.