Buggy python submission (verdict: Time Limit Exceeded):
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)], key=lambda x: x[1])

    class segtree():
        def __init__(self,base,monoid,ini):#self,モノイド,元の配列
            #ini：上限（下限）,base：元の配列,monoid：モノイド,tree：セグ木,depth：treeの深さ,
            #basesize：baseの要素数,treesize：treeの要素数,num：treesize-basesize
            # 初期値（上限とか下限）を決定
            self.ini=ini
            #セグ木の要素数（num）および深さ（depth）を計算
            self.basesize=len(base)
            self.num,self.depth=1,1
            while self.num<self.basesize:
                self.num*=2
                self.depth+=1
            self.num-=1
            #関数（モノイド、今回はmin）を設定
            self.monoid=monoid
            #セグ木を構築
            self.treesize=self.num*2+1
            self.tree=[None]*self.treesize
            #segtree[m]以降に代入したい配列を入力していく
            for i in range(self.num, self.num+self.basesize):self.tree[i]=base[i-self.num]
            for i in range(self.num+self.basesize, self.treesize):self.tree[i]=ini
            #segtree[m]以降の情報を使って、0に向かってセグ木を構築していく
            for i in range(self.num-1,-1,-1):
                self.tree[i]=monoid(self.tree[2*i+1],self.tree[2*i+2])
        
        #条件を満たす(サンプルの条件はs以下になること)最大のインデックスを返す関数
        def max_index(self,index_func):
            #探していく
            i=0
            while i<self.num:
                k=2*i+1
                if index_func(self.tree[k+1]):
                    i=k+1
                    continue
                if index_func(self.tree[k]):
                    i=k
                    continue
                return -1
            return i-self.num
    
        #条件を満たす(サンプルの条件はs以下になること)最小のインデックスを返す関数
        def min_index(self,index_func):
            #探していく
            i=0
            while i<self.num:
                k=2*i+1
                if index_func(self.tree[k]):
                    i=k
                    continue
                if index_func(self.tree[k+1]):
                    i=k+1
                    continue
                return -1
            return i-self.num
    
        #半開区間[lower,upper)の最小値（とか）を探す関数
        def search(self,lower,upper):
            #返り値を初期化
            ret=self.ini
            l=lower+self.num
            r=upper+self.num
            while l<r:
                if r%2==0:
                    r-=1
                    ret=self.monoid(ret,self.tree[r])
                if l%2==0:
                    ret=self.monoid(ret,self.tree[l])
                    l+=1
                l//=2
                r//=2
            return ret
    
        #base[i]をsに更新したときにセグ木全体を更新する関数
        def update(self,index,new_value):
            i=index+self.num
            self.tree[i]=new_value
            while i!=0:
                i=(i-1)//2
                temp=self.monoid(self.tree[2*i+1],self.tree[2*i+2])
                if self.tree[i]!=temp:
                    self.tree[i]=temp
                    continue
                break
    
    s=segtree([a for a,b in ab],min,10**9+1)
    cnt = 0
    for i in range(n):
        a,b=ab[i][0],ab[i][1]
        if a > b:
            t = s.max_index(lambda x:x<=b)
            if t <= i:
                print("No")
                return 0
            s.update(i, a)
            s.update(t, a)
            ab[i][0], ab[t][0] = ab[t][0], a
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()


Fixed submission:
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:x[1])
    num=131071

    m=num+n
    segtree=[10**9+1]*m
    for i in range(num,m):
        segtree[i] = ab[i - num][0]
    for i in range(num-1,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= num:
            return i - num
        k = 2 * i + 1
        if k+2<=m:
            if segtree[k+1] <= s:
                return search(k+1, s)
        if 2*i+2<=m:
            if segtree[k] <= s:
                return search(k, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        k=(i - 1) // 2
        if i % 2 == 1:
            if m > i + 1:
                temp=min(segtree[i+1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)
            else:
                segtree[k] = segtree[i]
                update_bad(k)
        else:
            if i != 0:
                temp=min(segtree[i-1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)

    cnt = 0
    for i in range(n):
        a,b=ab[i][0],ab[i][1]
        if a > b:
            t = search(0, b)
            if t <= i:
                print("No")
                return 0
            update_good(num + i, a)
            segtree[num + t] = a
            update_bad(num + t)
            ab[i][0], ab[t][0] = ab[t][0], a
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:x[1])
    num=131071

    m=num+n
    segtree=[10**9+1]*m
    for i in range(num,m):
        segtree[i] = ab[i - num][0]
    for i in range(num-1,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= num:
            return i - num
        k = 2 * i + 1
        if k+2<=m:
            if segtree[k+1] <= s:
                return search(k+1, s)
        if 2*i+2<=m:
            if segtree[k] <= s:
                return search(k, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        k=(i - 1) // 2
        if i % 2 == 1:
            if m > i + 1:
                temp=min(segtree[i+1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)
            else:
                segtree[k] = segtree[i]
                update_bad(k)
        else:
            if i != 0:
                temp=min(segtree[i-1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)

    cnt = 0
    for i in range(n):
        a,b=ab[i][0],ab[i][1]
        if a > b:
            t = search(0, b)
            if t <= i:
                print("No")
                return 0
            update_good(num + i, a)
            segtree[num + t] = a
            update_bad(num + t)
            ab[i][0], ab[t][0] = ab[t][0], a
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()

Fixed submission:
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:x[1])
    num=131071

    m=num+n
    segtree=[10**9+1]*m
    for i in range(num,m):
        segtree[i] = ab[i - num][0]
    for i in range(num-1,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= num:
            return i - num
        k = 2 * i + 1
        if k+2<=m:
            if segtree[k+1] <= s:
                return search(k+1, s)
        if 2*i+2<=m:
            if segtree[k] <= s:
                return search(k, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        k=(i - 1) // 2
        if i % 2 == 1:
            if m > i + 1:
                temp=min(segtree[i+1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)
            else:
                segtree[k] = segtree[i]
                update_bad(k)
        else:
            if i != 0:
                temp=min(segtree[i-1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)

    cnt = 0
    for i in range(n):
        a,b=ab[i][0],ab[i][1]
        if a > b:
            t = search(0, b)
            if t <= i:
                print("No")
                return 0
            update_good(num + i, a)
            segtree[num + t] = a
            update_bad(num + t)
            ab[i][0], ab[t][0] = ab[t][0], a
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:(x[1],x[0]))

    m=131071+n
    segtree=[10**9+1]*m
    for i in range(131071,m):
        segtree[i] = ab[i - 131071][0]
    for i in range(131070,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= 131071:
            return i - 131071
        if 2*i+3<=m:
            if segtree[2 * i + 2] <= s:
                return search(2 * i + 2, s)
        if 2*i+2<=m:
            if segtree[2 * i + 1] <= s:
                return search(2 * i + 1, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        if i % 2 == 1:
            if m > i + 1:
                temp=min(segtree[i+1],segtree[i])
                if segtree[(i - 1) // 2]<temp:
                    segtree[(i - 1) // 2] = temp
                    update_bad((i - 1) // 2)
            else:
                segtree[(i - 1) // 2] = segtree[i]
                update_bad((i - 1) // 2)
        else:
            if i != 0:
                temp=min(segtree[i-1],segtree[i])
                if segtree[(i - 1) // 2]<temp:
                    segtree[(i - 1) // 2] = temp
                    update_bad((i - 1) // 2)

    cnt = 0
    for i in range(n):
        if ab[i][0] > ab[i][1]:
            s = search(0, ab[i][1])
            if s <= i:
                print("No")
                return 0
            update_good(131071 + i, ab[s][0])
            segtree[131071 + s] = ab[i][0]
            update_bad(131071 + s)
            ab[i][0], ab[s][0] = ab[s][0], ab[i][0]
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()

Fixed submission:
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:x[1])
    num=131071

    m=num+n
    segtree=[10**9+1]*m
    for i in range(num,m):
        segtree[i] = ab[i - num][0]
    for i in range(num-1,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= num:
            return i - num
        k = 2 * i + 1
        if k+2<=m:
            if segtree[k+1] <= s:
                return search(k+1, s)
        if 2*i+2<=m:
            if segtree[k] <= s:
                return search(k, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        k=(i - 1) // 2
        if i % 2 == 1:
            if m > i + 1:
                temp=min(segtree[i+1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)
            else:
                segtree[k] = segtree[i]
                update_bad(k)
        else:
            if i != 0:
                temp=min(segtree[i-1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)

    cnt = 0
    for i in range(n):
        a,b=ab[i][0],ab[i][1]
        if a > b:
            t = search(0, b)
            if t <= i:
                print("No")
                return 0
            update_good(num + i, a)
            segtree[num + t] = a
            update_bad(num + t)
            ab[i][0], ab[t][0] = ab[t][0], a
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:(x[1],x[0]))

    m=131071+n
    segtree=[10**9+1]*m
    #print(ab)
    for i in range(131071,m):
        segtree[i] = ab[i - 131071][0]
    for i in range(131070,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= 131071:
            return i - 131071
        if 2*i+3<=m:
            if segtree[2 * i + 2] <= s:
                return search(2 * i + 2, s)
        if 2*i+2<=m:
            if segtree[2 * i + 1] <= s:
                return search(2 * i + 1, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        if i % 2 == 1:
            if m>i+1:
                segtree[(i - 1) // 2] = min(segtree[i+1],segtree[i])
                update_bad((i - 1) // 2)
            else:
                segtree[(i - 1) // 2] = segtree[i]
                update_bad((i - 1) // 2)
        else:
            if i!=0:
                segtree[(i - 1) // 2] = min(segtree[i-1],segtree[i])
                update_bad((i - 1) // 2)

    cnt = 0
    for i in range(n):
        if ab[i][0] > ab[i][1]:
            s = search(0, ab[i][1])
            if s <= i:
                print("No")
                return 0
            update_good(131071 + i, ab[s][0])
            segtree[131071 + s] = ab[i][0]
            update_bad(131071 + s)
            ab[i][0], ab[s][0] = ab[s][0], ab[i][0]
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()

Fixed submission:
def main():
    n = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    ab = sorted([[a[i], b[i]] for i in range(n)],key=lambda x:x[1])
    num=131071

    m=num+n
    segtree=[10**9+1]*m
    for i in range(num,m):
        segtree[i] = ab[i - num][0]
    for i in range(num-1,-1,-1):
        j=2*i+1
        if j>=m:
            segtree[i]=10**9+1
        elif j+1>=m:
            segtree[i]=segtree[j]
        else:
            segtree[i] = min(segtree[j], segtree[j + 1])

    #探す
    def search(i, s):
        if i >= num:
            return i - num
        k = 2 * i + 1
        if k+2<=m:
            if segtree[k+1] <= s:
                return search(k+1, s)
        if 2*i+2<=m:
            if segtree[k] <= s:
                return search(k, s)
        return -1
    
    #更新
    def update_good(i, s):
        if segtree[i] > s:
            segtree[i] = s
            update_good((i - 1) // 2, s)
    
    def update_bad(i):
        k=(i - 1) // 2
        if i % 2 == 1:
            if m > i + 1:
                temp=min(segtree[i+1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)
            else:
                segtree[k] = segtree[i]
                update_bad(k)
        else:
            if i != 0:
                temp=min(segtree[i-1],segtree[i])
                if segtree[k]<temp:
                    segtree[k] = temp
                    update_bad(k)

    cnt = 0
    for i in range(n):
        a,b=ab[i][0],ab[i][1]
        if a > b:
            t = search(0, b)
            if t <= i:
                print("No")
                return 0
            update_good(num + i, a)
            segtree[num + t] = a
            update_bad(num + t)
            ab[i][0], ab[t][0] = ab[t][0], a
            cnt+=1
    if cnt <= n - 2:
        print("Yes")
    else:
        print("No")
    
main()