Submission #1798480


Source Code Expand

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <vector>
using namespace std;

int main() {
        string s;
        cin >> s;
        int bg = 0, ed = s.size() - 1;
        int ans = 0;
        while (bg < ed) {
                if (s[bg] == 'x' && s[ed] == 'x') bg ++, ed --;
                else if (s[bg] == 'x' && s[ed] != 'x') {
                        ans ++;
                        bg ++;
                } else if (s[bg] != 'x' && s[ed] == 'x') {
                        ans ++;
                        ed --;
                } else if (s[bg] != s[ed]) {
                        return !printf("-1\n");
                } else {
                        bg ++, ed --;
                }
        }
        printf("%d\n", ans);
        return 0;
}

Submission Info

Submission Time
Task C - Inserting 'x'
User KokiYmgch
Language C++14 (GCC 5.4.1)
Score 400
Code Size 822 Byte
Status AC
Exec Time 5 ms
Memory 512 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 4
AC × 33
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 AC 1 ms 256 KB
0_01.txt AC 1 ms 256 KB
0_02.txt AC 1 ms 256 KB
0_03.txt AC 1 ms 256 KB
1_00.txt AC 1 ms 256 KB
1_01.txt AC 1 ms 256 KB
1_02.txt AC 1 ms 256 KB
1_03.txt AC 1 ms 256 KB
1_04.txt AC 1 ms 256 KB
1_05.txt AC 1 ms 256 KB
1_06.txt AC 5 ms 512 KB
1_07.txt AC 5 ms 512 KB
1_08.txt AC 5 ms 512 KB
1_09.txt AC 5 ms 512 KB
1_10.txt AC 5 ms 512 KB
1_11.txt AC 5 ms 512 KB
1_12.txt AC 5 ms 512 KB
1_13.txt AC 5 ms 512 KB
1_14.txt AC 5 ms 512 KB
1_15.txt AC 5 ms 512 KB
1_16.txt AC 5 ms 512 KB
1_17.txt AC 5 ms 512 KB
1_18.txt AC 5 ms 512 KB
1_19.txt AC 5 ms 512 KB
1_20.txt AC 5 ms 512 KB
1_21.txt AC 5 ms 512 KB
1_22.txt AC 5 ms 512 KB
1_23.txt AC 5 ms 512 KB
1_24.txt AC 5 ms 512 KB
1_25.txt AC 5 ms 512 KB
1_26.txt AC 5 ms 512 KB
1_27.txt AC 5 ms 512 KB
1_28.txt AC 5 ms 512 KB