Submission #1706452


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#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<n;i++)
using namespace std;

signed main(){
	string s;cin>>s;
	deque<char>que;
	for(char c:s)que.push_back(c);
	int cnt=0;
	while(que.size()>1){
		if(que.front()==que.back()){
			que.pop_front();
			que.pop_back();
		}
		else if(que.front()=='x'){
			que.push_back('x');
			cnt++;
		}
		else if(que.back()=='x'){
			que.push_front('x');
			cnt++;
		}
		else{
			puts("-1");
			return 0;
		}
	}
	cout<<cnt<<endl;
}

Submission Info

Submission Time
Task C - Inserting 'x'
User autumn_eel
Language C++14 (GCC 5.4.1)
Score 400
Code Size 496 Byte
Status
Exec Time 12 ms
Memory 512 KB

Judge Result

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 1 ms 256 KB
0_01.txt 1 ms 256 KB
0_02.txt 1 ms 256 KB
0_03.txt 1 ms 256 KB
1_00.txt 1 ms 256 KB
1_01.txt 1 ms 256 KB
1_02.txt 1 ms 256 KB
1_03.txt 1 ms 256 KB
1_04.txt 1 ms 256 KB
1_05.txt 1 ms 256 KB
1_06.txt 5 ms 512 KB
1_07.txt 5 ms 512 KB
1_08.txt 5 ms 512 KB
1_09.txt 5 ms 512 KB
1_10.txt 12 ms 512 KB
1_11.txt 5 ms 512 KB
1_12.txt 5 ms 512 KB
1_13.txt 5 ms 512 KB
1_14.txt 5 ms 512 KB
1_15.txt 5 ms 512 KB
1_16.txt 5 ms 512 KB
1_17.txt 5 ms 512 KB
1_18.txt 5 ms 512 KB
1_19.txt 5 ms 512 KB
1_20.txt 5 ms 512 KB
1_21.txt 5 ms 512 KB
1_22.txt 5 ms 512 KB
1_23.txt 5 ms 512 KB
1_24.txt 5 ms 512 KB
1_25.txt 5 ms 512 KB
1_26.txt 5 ms 512 KB
1_27.txt 5 ms 512 KB
1_28.txt 5 ms 512 KB