#yukicoder 2823 PEX Game from random import randint #適当に実験 Grundy数を計算する def brute(S): D = dict() E = dict() Q = [tuple(sorted(S))] while Q: T = Q.pop() if T not in D: #入りがけの処理 Q.append(T) D[T] = -1 E[T] = [] #遷移先を全探索する R = [0] * (max(T) + 1) for i in T: R[i] = 1 if sum(R[1: len(T) + 1]) == len(T): D[T] = 0 continue for i in range(1, max(T) + 1): if R[i] == 0: continue for j in range(i - 1, -1, -1): if R[j] == 0: break if j == 0: continue R[i], R[j] = R[j], R[i] nT = tuple([i for i in range(1, len(R)) if R[i] == 1]) R[i], R[j] = R[j], R[i] Q.append(nT) E[T].append(nT) elif D[T] != -1: continue elif D[T] == -1: #帰りがけの処理 X = set() for nT in E[T]: assert D[nT] >= 0 X.add(D[nT]) for i in range(10 ** 7): if i not in X: D[T] = i break return D[tuple(sorted(S))] #規則性しかない 適当にエスパーする #x: これより左側にある値の個数 def esper(Lt, Rt, x): d = Rt - Lt + 1 return 0 if (Lt - x) & 1 == 1 else d def test(Lt, Rt): D = [i for i in range(Lt, Rt + 1)] assert brute(D) == esper(Lt, Rt) #適当にテストケース乱択 def make_test(maxN = 12): P = [] while len(P) == 0 or randint(0, 3): back = P[-1] if len(P) else 0 if back >= maxN - 1: break Lt = randint(back + 1, maxN - 1) Rt = randint(Lt + 1, maxN) P.append(Lt) P.append(Rt) assert len(P) > 0 and len(P) & 1 == 0 Q = [] for i in range(len(P) // 2): Q.append((P[i << 1], P[i << 1 | 1])) return Q def solve(P): #圧縮 bL, bR = P[0] Q = [] for i in range(1, len(P)): Lt, Rt = P[i] if bR + 1 == Lt: bR = Rt continue else: if bL != bR: Q.append((bL, bR)) bL, bR = Lt, Rt if bL != bR: Q.append((bL, bR)) ans = 0 cnt = 0 for Lt, Rt in Q: ans ^= esper(Lt, Rt, cnt) cnt += Rt - Lt + 1 return ans #実験 def act(time = 1000): for _ in range(1, time + 1): P = make_test(15) Q = [] for Lt, Rt in P: for i in range(Lt, Rt + 1): Q.append(i) assert brute(Q) == solve(P), P #実行 N = int(input()) P = [tuple(map(int, input().split())) for _ in range(N)] ans = solve(P) print('First' if ans else 'Second')