Classify if the following sentence is a metaphor or a simile. Output 1 for metaphor and 0 for simile.
He was as quiet as a mouse.
0
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify if the following sentence is a metaphor or a simile. Output 1 for metaphor and 0 for simile.

### Input:
He was as quiet as a mouse.

### Output:
0