結果
| 問題 |
No.154 市バス
|
| ユーザー |
|
| 提出日時 | 2024-03-21 13:43:06 |
| 言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,183 bytes |
| コンパイル時間 | 81 ms |
| コンパイル使用メモリ | 12,800 KB |
| 実行使用メモリ | 11,136 KB |
| 最終ジャッジ日時 | 2024-09-30 10:07:33 |
| 合計ジャッジ時間 | 1,056 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | WA * 1 |
| other | AC * 1 WA * 7 |
ソースコード
import sys
import math
import bisect
from heapq import heapify, heappop, heappush
from collections import deque, defaultdict, Counter
from functools import lru_cache
from itertools import accumulate, combinations, permutations, product
sys.setrecursionlimit(1000000)
MOD = 10 ** 9 + 7
MOD99 = 998244353
input = lambda: sys.stdin.readline().strip()
NI = lambda: int(input())
NMI = lambda: map(int, input().split())
NLI = lambda: list(NMI())
SI = lambda: input()
SMI = lambda: input().split()
SLI = lambda: list(SMI())
EI = lambda m: [NLI() for _ in range(m)]
def _solve(S):
gmax = S.count("G")
rmax = S.count("R")
if gmax != rmax:
return False
ok = True
w = 0
g = 0
for s in S:
if s == "G":
if w == 0:
ok = False
break
gmax -= 1
g += 1
elif s == "R":
rmax -= 1
if g and w:
g -= 1
w -= 1
else:
ok = False
break
else:
if rmax == 0 or gmax == 0:
ok = False
break
w += 1
if g:
ok = False
return ok
def solve(S):
S = S[::-1]
r = 0
g = 0
for s in S:
if s == "R":
r += 1
elif s == "G":
if r == 0:
return False
r -= 1
g += 1
else:
if g:
g -= 1
elif r:
return False
return True
def main():
T = NI()
for _ in range(T):
S = SI()
if solve(S):
print("possible")
else:
print("impossible")
def guchoku():
for P in product("WGR", repeat=7):
ok = solve(P)
if P[0] != "W":
assert not ok
continue
if P[-1] != "R":
assert not ok
continue
if P.count("G") != P.count("R"):
assert not ok
continue
print("".join(P))
if ok:
print("possible")
else:
print("impossible")
if __name__ == "__main__":
main()
# guchoku()