def check_boring(first, last):
if first>=last:
return 1
for i in range(first,int((first+last)/2)+1):
if prev[i]<first and next[i]>last:
return (check_boring(first,i-1) and check_boring(i+1, last))
if prev[last-i]<first and next[last-i]>last:
return (check_boring(first,last-i-1) and check_boring(last-i+1, last))
return 0
def assign_prev():
d.clear()
for i in range(0,n):
if arr[i] in d:
prev[i] = d[arr[i]]
else:
prev[i] = -1
d[arr[i]] = i
def assign_next():
d.clear()
for i in range(n-1, -1, -1):
if arr[i] in d:
next[i] = d[arr[i]]
else:
next[i] = n
d[arr[i]] = i
d = dict()
t = int(input())
for i in range(t):
n = int(input())
next = [n] *n
prev = [-1] *n
arr = list(map(int,input().split()))
assign_prev()
assign_next()
if check_boring(0,n-1) == 1:
print('non-boring')
else:
print('boring')
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
27 ms |
4212 KB |
Execution failed because the return code was nonzero |
| 2 |
Halted |
0 ms |
0 KB |
- |
