Tell me the order of cardio and weight training

pu1. I tend to warm up with cardio first. I use a lot of strength for weight training

2017-12-21

OK

pu2. My trainer told me to do cardio for 30 minutes and work out

2017-12-21

OK

pu3. After doing cardio, I'll do cardio one more time after weight training

2017-12-21

OK