Submission #4031050

Source Code Expand

s = input()
ans = 0
lb = 0
rb = len(s) - 1
while rb - lb > 1:
    if s[lb] == s[rb]:
        lb += 1
        rb -= 1
    elif s[lb] == 'x':
        lb += 1
        ans += 1
    elif s[rb] == 'x':
        rb -= 1
        ans += 1
    else:
        ans = -1
        break
print(ans)
# https://img.atcoder.jp/code-festival-2017-qualc/editorial.pdf

Submission Info

Submission Time
Task C - Inserting 'x'
User yydoco
Language Python (3.4.3)
Score 0
Code Size 364 Byte
Status WA
Exec Time 67 ms
Memory 3316 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 400
Status
AC × 1
WA × 3
AC × 22
WA × 11
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt
Case Name Status Exec Time Memory
0_00.txt WA 18 ms 2940 KB
0_01.txt WA 18 ms 2940 KB
0_02.txt AC 18 ms 2940 KB
0_03.txt WA 18 ms 2940 KB
1_00.txt AC 18 ms 3060 KB
1_01.txt AC 18 ms 2940 KB
1_02.txt AC 18 ms 2940 KB
1_03.txt WA 18 ms 2940 KB
1_04.txt WA 18 ms 2940 KB
1_05.txt AC 18 ms 2940 KB
1_06.txt AC 37 ms 3188 KB
1_07.txt AC 35 ms 3188 KB
1_08.txt AC 37 ms 3188 KB
1_09.txt AC 36 ms 3188 KB
1_10.txt WA 67 ms 3188 KB
1_11.txt WA 63 ms 3188 KB
1_12.txt WA 46 ms 3188 KB
1_13.txt AC 38 ms 3188 KB
1_14.txt WA 45 ms 3188 KB
1_15.txt AC 38 ms 3188 KB
1_16.txt AC 48 ms 3188 KB
1_17.txt WA 45 ms 3188 KB
1_18.txt AC 21 ms 3188 KB
1_19.txt AC 43 ms 3188 KB
1_20.txt AC 30 ms 3316 KB
1_21.txt AC 47 ms 3188 KB
1_22.txt AC 36 ms 3188 KB
1_23.txt WA 49 ms 3188 KB
1_24.txt AC 32 ms 3188 KB
1_25.txt AC 44 ms 3188 KB
1_26.txt AC 20 ms 3316 KB
1_27.txt AC 34 ms 3188 KB
1_28.txt AC 22 ms 3188 KB