[gcj] Round 1b 2020 BUS routes problem

[D A Mahesh]

from math import ceil
t=int(input())
for p in range(1,t+1):
    n,d=map(int,input().split())
    a=list(map(int,input().split()))
    minn=0
    i=0
    j=0
    for y in a:
        b=(d//y)*y
        if(i!=0):
            if(minn>b):
                mi=m-(a[j]*ceil((m-b)/a[j]))
                if(minn>mi):
                    minn=mi
            j+=1
        else:
            minn=b    
        m=b
        i+=1
    print("Case #{}: {}".format(p,minn))
Whats wrong in my code??
my results are wrong answer and test set skipped
the code is working good on sample test.
please help me to find out the mistake.
note - Im just a beginner

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