#include "testlib.h"

#include <bits/stdc++.h>
using namespace std;
string S, T, f, g;

int main(int argc, char* argv[]) {
    registerTestlibCmd(argc, argv);
    S = inf.readWord(), T = inf.readWord();
    if (S.length() != T.length()) ans.quitf(_wa, "Wrong data.");
    int n = S.length();
    f = ans.readWord("YES|NO"), g = ouf.readWord("YES|NO");
    if (f != g) {
        if (f == "YES") quitf(_wa, "Participant did not find the solution, while jury did.");
    }
    if (g == "NO") quitf(_ok, "OK.");
    int m = ouf.readInt(0, 8 * n);
    while (m--) {
        int l = ouf.readInt(1, n), r = ouf.readInt(l, n);
        int x = count(S.begin() + l - 1, S.begin() + r, '1') & 1;
        if (x) quitf(_wa, "Wrong solution.");
        reverse(S.begin() + l - 1, S.begin() + r);
    }
    if (S != T) quitf(_wa, "Wrong solution.");
    quitf(_ok, "OK.");
}