/* Problem URL: https://codeforces.com/gym/101908/problem/B */ #include using namespace std; #define V vector #define rmin(a, b) a = min(a, b) #define rmax(a, b) a = max(a, b) #define rep(i, lim) for (int i = 0; i < (lim); i++) #define nrep(i, s, lim) for (int i = s; i < (lim); i++) #define repv(i, v) for (auto &i : (v)) #define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; } #define sortv(v) sort(v.begin(), v.end()) #define all(v) (v).begin(), (v).end() using vi = vector; using vvi = vector; using vvvi = vector; using vvvvi = vector; using ll = long long; using vl = vector; using vvl = vector; using vvvl = vector; using vvvvl = vector; template auto operator<<(ostream &os, const vector &vec)->ostream& { os << vec[0]; for (size_t i = 1; i < vec.size(); i++) { os << ' ' << vec[i]; } os << '\n'; return os; } template auto operator>>(istream &is, vector &vec)->istream& { for (auto &i : vec) { is >> i; } return is; } template auto operator<<(ostream &os, const vector> &vec)->ostream& { for (auto &i : vec) { os << i[0]; for (size_t j = 1; j < i.size(); j++) { os << ' ' << i[j]; } os << '\n'; } return os; } template auto operator>>(istream &is, vector> &vec)->istream& { for (auto &i : vec) { for (auto &j : i) { is >> j; } } return is; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int mr; cin >> mr; const int n = 101; const int inf = INT32_MAX >> 1; vvi grundy(n, vi(n)); rep(i, n) { grundy[i][i] = 1000; grundy[0][i] = 1000; grundy[i][0] = 1000; } auto search = [&](int i, int j) { V exists(1001, false); nrep(k, 1, n) { if (i - k >= 0) { exists[grundy[i - k][j]] = true; } if (j - k >= 0) { exists[grundy[i][j - k]] = true; } if (i - k >= 0 && j - k >= 0) { exists[grundy[i - k][j - k]] = true; } } int mex = 0; while (exists[mex]) { mex++; } return mex; }; nrep(i, 1, n) { nrep(j, 1, n) { if (i == j) { continue; } grundy[i][j] = search(i, j); } } int state = 0; while (mr--) { int i, j; cin >> i >> j; state ^= grundy[i][j]; } cout << (state == 0 ? "N\n" : "Y\n"); }