Hi all,
My solution for this problem is given below . I don't know for which inputs
my solution went wrong ,i tried many test cases ( even and 2<=n<=16) but I
couldn't find where my code went wrong . Please help me in finding test
cases for which my solution went wrong (even cases) . Thanks in advance.
testcases=int(input())
for case in range(1,testcases+1):
n=int(input())
l=list(map(int,input().split()))
extra=0
if n%2==1:
extra=l[0];
l=l[1:]
n-=1
fin=[]
i=0
while i+1<n:
fin+=[[min(l[i],l[i+1]),max(l[i],l[i+1])]]
i+=2
fin.sort(key= lambda x : x[0])
if fin[0][0]%2==0:
lset=[fin[0][1]]
rset=[fin[0][0]]
else:
lset=[fin[0][0]]
rset=[fin[0][1]]
flag=0
for i in fin[1:]:
if i[0]%2==0:
if i[0]-1 in lset:
rset+=[i[0]]
lset+=[i[1]]
flag=1
else:
rset+=[i[1]]
lset+=[i[0]]
flag=1
else:
if i[0]+1 in lset:
rset+=[i[0]]
lset+=[i[1]]
flag=1
else:
rset+=[i[1]]
lset+=[i[0]]
flag=1
if flag==0:
lset+=[i[0]]
rset+=[i[1]]
else:
flag=0
if extra!=0:
if extra%2==0:
if extra-1 in lset:
rset+=[extra]
else:
lset+=[extra]
else:
if extra+1 in lset:
rset+=[extra]
else:
lset+=[extra]
res=['L' for i in range(n+1)]
else:
res=['L' for i in range(n)]
for i in rset:
res[i-1]='R'
if case < testcases:
print('Case #',case,": ","".join(res),sep="")
else:
print('Case #',case,": ","".join(res),sep="",end="")
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