def locate_card(cards,query):
    lo,hi=0,len(cards)-1
    print('lo=',lo,'hi=',hi)
    while lo<=hi:
        mid=(lo+hi)//2
        if cards[mid]==query:
            return mid
        elif cards[mid]< query:
            hi=mid-1
        elif cards[mid]>query:
            lo = mid+1
            
    return -1    

from jovian.pythondsa import evaluate_test_cases

from jovian.pythondsa import evaluate_test_case

tests=[]

tests.append({
    'input':{'cards':[15,14,10,9,7,6,3],
             'query':10
            },
    'output':2
})