Submission #4044030

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Source Code Expand

#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main(){
    string input;
    cin >> input;
    string str;
    vector<int> x_num(0);

    int tmp=0;
    for(int i=0; i<input.size(); i++){
        if(input[i]=='x'){
            tmp++;
        }else{
            str.push_back(input[i]);
            x_num.push_back(tmp);
            tmp=0;
        }
    }
    x_num.push_back(tmp);

    int ans = 0;
    int num=str.size();
    for(int i=0; i<num/2; i++){
        if(str[i]!=str[num-1-i]){
            ans=-1;
            break;
        }
    }

    if(ans!=-1){
        num=x_num.size();
        for(int i=0; i<num/2; i++){
            ans+=abs(x_num[i]-x_num[num-1-i]);
        }
    }
    cout << ans << endl;

}

Submission Info

Judge Result