Identify if the sentence is in the present tense. Output 1 if it is, and 0 if it is not.
I have been walking for hours.
0
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify if the sentence is in the present tense. Output 1 if it is, and 0 if it is not.

### Input:
I have been walking for hours.

### Output:
0