Submission #1498908


Source Code Expand

n,k=map(int,input().split())
s=list(input())*3
p=['A' if s[i]=='B' else 'B' for i in range(n)]*3
head,tail=0,n
for i in range(2*n):
	if s[head]=='A':
		s[head],p[head]='B','A'
	else:
		s,p=p,s
		head+=1
		s[tail],p[tail]='A','B'		
		tail+=1
	if i==k-1:
		print(''.join(s[head:tail]))
		break
else:
	if n%2==1 and k%2==1:
		if s[head]=='A':
			s[head],p[head]='B','A'
		else:
			s,p=p,s
			head+=1
			s[tail],p[tail]='A','B'		
			tail+=1
	print(''.join(s[head:tail]))

Submission Info

Submission Time
Task D - Half Reflector
User fts2001
Language PyPy3 (2.4.0)
Score 900
Code Size 490 Byte
Status AC
Exec Time 251 ms
Memory 69932 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 900 / 900
Status
AC × 3
AC × 50
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt
All sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in4.txt, in40.txt, in41.txt, in42.txt, in5.txt, in543.txt, in557.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt
Case Name Status Exec Time Memory
in1.txt AC 169 ms 38256 KB
in10.txt AC 228 ms 68400 KB
in11.txt AC 237 ms 68656 KB
in12.txt AC 229 ms 67504 KB
in13.txt AC 227 ms 68400 KB
in14.txt AC 232 ms 68656 KB
in15.txt AC 225 ms 67376 KB
in16.txt AC 223 ms 68656 KB
in17.txt AC 233 ms 68784 KB
in18.txt AC 228 ms 68656 KB
in19.txt AC 228 ms 68656 KB
in2.txt AC 206 ms 53244 KB
in20.txt AC 234 ms 68656 KB
in21.txt AC 228 ms 68656 KB
in22.txt AC 238 ms 69804 KB
in23.txt AC 236 ms 69676 KB
in24.txt AC 236 ms 69804 KB
in25.txt AC 240 ms 69932 KB
in26.txt AC 234 ms 69804 KB
in27.txt AC 236 ms 69804 KB
in28.txt AC 228 ms 68656 KB
in29.txt AC 234 ms 68656 KB
in3.txt AC 225 ms 68656 KB
in30.txt AC 227 ms 68656 KB
in31.txt AC 225 ms 68656 KB
in32.txt AC 227 ms 68656 KB
in33.txt AC 235 ms 68656 KB
in34.txt AC 235 ms 68656 KB
in35.txt AC 238 ms 68656 KB
in36.txt AC 232 ms 68656 KB
in37.txt AC 239 ms 69804 KB
in38.txt AC 237 ms 69804 KB
in39.txt AC 234 ms 68656 KB
in4.txt AC 251 ms 69804 KB
in40.txt AC 232 ms 68656 KB
in41.txt AC 224 ms 68656 KB
in42.txt AC 228 ms 68656 KB
in5.txt AC 237 ms 69804 KB
in543.txt AC 218 ms 68528 KB
in557.txt AC 217 ms 68656 KB
in6.txt AC 167 ms 38256 KB
in7.txt AC 229 ms 68656 KB
in8.txt AC 237 ms 69804 KB
in9.txt AC 239 ms 68784 KB
sample1.txt AC 165 ms 38256 KB
sample2.txt AC 167 ms 38256 KB
sample3.txt AC 164 ms 38256 KB