Determine the appropriate clothing recommendation based on temperature. Return "Wear a coat" if temperature is below 50°F, "Wear a jacket" if between 50°F and 70°F, and "Wear a t-shirt" if above 70°F.
Examples:
Input: temp = 45
Output: "Wear a coat"
Explanation: 45°F is below 50°F, so a coat is recommended
Input: temp = 65
Output: "Wear a jacket"
Explanation: 65°F is between 50°F and 70°F, so a jacket is recommended
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