Why i am getting run time error in this code?

s=[]
for i in range(int(input())):
n=int(input())
for i in range(0,n):
s.append(input())
spl=[k.split()[0] for k in s]
c=[spl.count(f) for f in spl]
for p in range(n):
print(spl[p] if c[p]==1 else s[p])

Don’t forget indentation in loops