Submission #5655647


Source Code Expand

Copy
s = input()

a = ''
for i in range(len(s)):
    if s[i]!='x':
        a+=s[i]

b = ''
for i in range(len(a)):
    b+=a[-1-i]

if a!=b:
    print(-1)
else:
    ss = ''
    for i in range(len(s)):
        ss += s[-1-i]
    i = 0
    j=0
    ans = 0
    while True:
        if i>=len(s):
            ans += len(ss)-j
            break
        elif j>=len(ss):
            ans += len(s)-i
            break
        if s[i]!=ss[j]:
            if s[i]=='x':
                i+=1
            else:
                j+=1
            ans += 1
        else:
            i+=1
            j+=1
    print(ans//2)

Submission Info

Submission Time
Task C - Inserting 'x'
User psmf1
Language Python3 (3.4.3)
Score 400
Code Size 639 Byte
Status
Exec Time 152 ms
Memory 3444 KB

Test Cases

Set Name Score / Max Score Test Cases
Sample 0 / 0 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt
All 400 / 400 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 17 ms 3064 KB
0_01.txt 17 ms 3064 KB
0_02.txt 17 ms 3064 KB
0_03.txt 17 ms 3064 KB
1_00.txt 17 ms 3064 KB
1_01.txt 17 ms 3064 KB
1_02.txt 17 ms 3064 KB
1_03.txt 17 ms 3064 KB
1_04.txt 17 ms 3064 KB
1_05.txt 17 ms 3064 KB
1_06.txt 141 ms 3444 KB
1_07.txt 95 ms 3188 KB
1_08.txt 138 ms 3444 KB
1_09.txt 96 ms 3188 KB
1_10.txt 103 ms 3188 KB
1_11.txt 105 ms 3188 KB
1_12.txt 151 ms 3316 KB
1_13.txt 99 ms 3188 KB
1_14.txt 101 ms 3188 KB
1_15.txt 97 ms 3188 KB
1_16.txt 26 ms 3188 KB
1_17.txt 103 ms 3188 KB
1_18.txt 26 ms 3188 KB
1_19.txt 116 ms 3188 KB
1_20.txt 28 ms 3316 KB
1_21.txt 138 ms 3316 KB
1_22.txt 37 ms 3188 KB
1_23.txt 138 ms 3316 KB
1_24.txt 42 ms 3188 KB
1_25.txt 152 ms 3316 KB
1_26.txt 48 ms 3316 KB
1_27.txt 146 ms 3444 KB
1_28.txt 69 ms 3316 KB