Submission #1115967

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;



inline char op(char c)
{
    return c == 'S' ? 'W' : 'S';
}

int main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(false);

    int n;
    cin >> n;
    string a;
    cin >> a;

    string t;
    for (int i = 0; i <= n; i++) {
        t.push_back(' ');
    }
    for (int f = 0; f < 2; f++) {
        for (int s = 0; s < 2; s++) {
            t[0] = (f == 0 ? 'S' : 'W');
            t[1] = (s == 0 ? 'S' : 'W');

            for (int i = 1; i < n; i++) {
                if (t[i] == 'S') {
                    if (a[i] == 'o') {
                        t[i + 1] = t[i - 1];
                    } else {
                        t[i + 1] = op(t[i - 1]);
                    }
                } else {
                    if (a[i] == 'o') {
                        t[i + 1] = op(t[i - 1]);
                    } else {
                        t[i + 1] = t[i - 1];
                    }
                }
            }

            if (t[n] == t[0] and t[n - 1] == t[1]) {
                t.resize(n);
                cout << t << endl;
                return 0;
            }
        }
    }
    cout << -1 << endl;
    return 0;
}

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