Submission #5655664


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 PyPy3 (2.4.0)
Score 0
Code Size 641 Byte
Status

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 0 / 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 165 ms 38256 KB
0_01.txt 164 ms 38256 KB
0_02.txt 165 ms 38256 KB
0_03.txt 163 ms 38256 KB
1_00.txt 162 ms 38256 KB
1_01.txt 164 ms 38256 KB
1_02.txt 163 ms 38256 KB
1_03.txt 162 ms 38256 KB
1_04.txt 166 ms 38256 KB
1_05.txt 163 ms 38256 KB
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 167 ms 39280 KB
1_17.txt
1_18.txt 166 ms 39280 KB
1_19.txt
1_20.txt 168 ms 39280 KB
1_21.txt
1_22.txt 456 ms 64732 KB
1_23.txt
1_24.txt 698 ms 97756 KB
1_25.txt
1_26.txt 1740 ms 133768 KB
1_27.txt
1_28.txt