Harryxun/sft_time huggingface dataset:
### BUGGY CODE ###

#!/mnt/c/Users/moiki/bash/env/bin/python
N = int(input())
H = list(map(int, input().split()))
A = list(map(int, input().split()))
# ---------------------------------------------------------------------------------
from collections import deque
N0 = 2**(N).bit_length()
INF = float("inf")
INF = -(2**31-1) 

data = [INF]*(2*N0)

def update(k,x):
    k += N0 - 1
    data[k] = x
    # oldk = k
    # k += N0-1 # $B$3$N:n6H$O!D!D(B? #$B0lHV2<$NCJ$K(B
    # data[k] = k # $B$3$l@N$NCM$rF~$l$J$$$H$$$1$J$$$s$8$c$J$$$N!)(B
    # data[k] = oldk # $B$3$l@N$NCM$rF~$l$J$$$H$$$1$J$$$s$8$c$J$$$N!)(B
    while k >= 0:
        k = (k-1)//2
        data[k] = max(data[2*k+1], data[2*k+2])

# $B6h4V(B[l, r)$B$N:G>.CM(B
def query(l,r):
    L = l + N0 # $B$J$s$G(BN0$B$rB-$7$F$$$k!D(B?
    R = r + N0
    s = INF
    while L < R:
        if R & 1:
            R -= 1
            s = max(s,data[R-1])
        if L & 1:
            s = max(s, data[L-1])
            L += 1
        L >>= 1; R >>= 1
    return s
# ---------------------------------------------------------------------------------
dp = [0] * (N+1)
#dp = [ [0] * (N+1) for _ in range(2*10**5+1)]

for i in range(1,N+1):
    dp[i] = max(query(0, H[i-1]), 0) + A[i-1]
    update(H[i-1], dp[i])
print(max(dp))



### FIXED CODE ###

#!/mnt/c/Users/moiki/bash/env/bin/python
N = int(input())
H = list(map(int, input().split()))
A = list(map(int, input().split()))
# ---------------------------------------------------------------------------------
from collections import deque
N0 = 2**(N).bit_length()
INF = float("inf")
INF = -(2**31-1) 

data = [INF]*(2*N0)

def update(k,x):
    k += N0 - 1
    data[k] = x
    # oldk = k
    # k += N0-1 # $B$3$N:n6H$O!D!D(B? #$B0lHV2<$NCJ$K(B
    # data[k] = k # $B$3$l@N$NCM$rF~$l$J$$$H$$$1$J$$$s$8$c$J$$$N!)(B
    # data[k] = oldk # $B$3$l@N$NCM$rF~$l$J$$$H$$$1$J$$$s$8$c$J$$$N!)(B
    while k >= 0:
        k = (k-1)//2
        data[k] = max(data[2*k+1], data[2*k+2])

# $B6h4V(B[l, r)$B$N:G>.CM(B
def query(l,r):
    L = l + N0 # $B$J$s$G(BN0$B$rB-$7$F$$$k!D(B?
    R = r + N0
    s = INF
    while L < R:
        if R & 1:
            R -= 1
            s = max(s,data[R-1])
        if L & 1:
            s = max(s, data[L-1])
            L += 1
        L >>= 1; R >>= 1
    return s
# ---------------------------------------------------------------------------------
dp = [0] * (N+1)
#dp = [ [0] * (N+1) for _ in range(2*10**5+1)]

for i in range(1,N+1):
    dp[i] = max(query(0, H[i-1]), 0) + A[i-1]
    update(H[i-1], dp[i])
print(max(dp))
### BUGGY CODE ###

n = int(input())
s = input()
st = set()
for i in range(n-2):
    for j in range(i+1, n-1):
        for k in range(j+1, n):
            pin = s[i] + s[j] + s[k]
            st.add(pin)
# print(st)
print(len(st))

### FIXED CODE ###

n = int(input())
s = input()
# st = set()
# for i in range(n-2):
#     for j in range(i+1, n-1):
#         for k in range(j+1, n):
#             pin = s[i] + s[j] + s[k]
#             st.add(pin)
# print(st)
count = 0
# for i in range(1000):
#     if len(str(i)) == 1:
#         v = "00" + str(i)
#     elif len(str(i)) == 2:
#         v = "0" + str(i)
#     else:
#         v = str(i)
#     k = 0
#     for j in range(len(v)):
#         while k < len(s):
#             if s[k] == v[j]:
#                 k += 1
#                 break
#             k += 1
#         else:
#             break
#     else:
#         count += 1
for i in range(1000):
    v = [i // 100, (i // 10) % 10, i % 10]
    first = s[:-2].find(str(v[0]))
    if first == -1:
        continue
    second = s[first + 1:-1].find(str(v[1]))
    if second == -1:
        continue
    third = s[first + 1 + second + 1:].find(str(v[2]))
    if third == -1:
        continue
    # print(v, first, second, third, first + second +1)
    count += 1
print(count)
### BUGGY CODE ###

import sys, bisect, math, itertools, string, queue, copy
import numpy as np
import scipy
from collections import Counter,defaultdict,deque
from itertools import permutations, combinations
from heapq import heappop, heappush
# input = sys.stdin.readline
sys.setrecursionlimit(10**8)
mod = 10**9+7
def inp(): return int(input())
def inpm(): return map(int,input().split())
def inpl(): return list(map(int, input().split()))
def inpls(): return list(input().split())
def inplm(n): return list(int(input()) for _ in range(n))
def inplL(n): return [list(input()) for _ in range(n)]
def inplT(n): return [tuple(input()) for _ in range(n)]
def inpll(n): return [list(map(int, input().split())) for _ in range(n)]
def inplls(n): return sorted([list(map(int, input().split())) for _ in range(n)])

n,k = inpm()
A = sorted(inpl())

#nCr
def comb(n,r):
    x = 1
    y = 1
    for i in range(r):
        x = x*(n-i)%mod #コンビネーションの分子
        y = y*(i+1)%mod #コンビネーションの分母
    return (x * pow(y, mod-2, mod) % mod)

ncr = [0]*(n+1)
for i in range(1,n+1):
    ncr[i] = comb(n-i,k-1)

ans = 0
for i in range(n):
    ans += (A[n-1-i] * ncr[i+1] - A[i] * ncr[i+1])
    ans %= mod

print(ans)


### FIXED CODE ###

import sys, bisect, math, itertools, string, queue, copy
# import numpy as np
# import scipy
# from collections import Counter,defaultdict,deque
# from itertools import permutations, combinations
# from heapq import heappop, heappush
# # input = sys.stdin.readline
# sys.setrecursionlimit(10**8)
mod = 10**9+7
def inp(): return int(input())
def inpm(): return map(int,input().split())
def inpl(): return list(map(int, input().split()))
def inpls(): return list(input().split())
def inplm(n): return list(int(input()) for _ in range(n))
def inplL(n): return [list(input()) for _ in range(n)]
def inplT(n): return [tuple(input()) for _ in range(n)]
def inpll(n): return [list(map(int, input().split())) for _ in range(n)]
def inplls(n): return sorted([list(map(int, input().split())) for _ in range(n)])

n,k = inpm()
A = sorted(inpl())

f=[1]
for i in range(1,n+1):
  f.append(f[-1]*i % mod)

#nCr
def comb(n,r):
    if n <= 0 or r <= 0:
        return 0
    x = f[n] % mod
    y = f[r] * f[n-r] % mod
    return (x * pow(y, mod-2, mod) % mod)

ans = 0
for i in range(n):
    c = comb(n-i-1,k-1)
    ans += A[n-1-i] * c - A[i] * c
    ans %= mod
    if c == 1:
        break

print(ans)
### BUGGY CODE ###

n,k = map(int,input().split())
h = input().split()
h_list = [int(s) for s in h]
cost = [0 for i in range(n)]
for i in range(n):
    if i == 0:
        cost[i] = 0
        continue
    if i == 1:
        cost[i] = abs(h_list[i] - h_list[i - 1])
        continue
    k_list = []
    for j in range(k):
        if i - j - 1 < 0:
            break
        k_list.append(cost[i - j - 1] + abs(h_list[i] - h_list[i - j - 1]))
    cost[i] = min(k_list)
print(cost[n - 1])

### FIXED CODE ###

n,k = map(int,input().split())
h = input().split()
h_list = [int(s) for s in h]
cost = [0 for i in range(n)]
for i in range(n):
    if i == 0:
        cost[i] = 0
        continue
    if i == 1:
        cost[i] = abs(h_list[i] - h_list[i - 1])
        continue
    k_list = []
    for j in range(k):
        if i - j - 1 < 0:
            break
        k_list.append(cost[i - j - 1] + abs(h_list[i] - h_list[i - j - 1]))
    cost[i] = min(k_list)
print(cost[n - 1])
### BUGGY CODE ###

n = int(input())
a = list(map(int,input().split()))
g = []
ans = 0
for j in range(60):
    d = 0
    for i in range(n):
        if a[i]&1:
            d += 1
        a[i] >>= 1
    g.append(d)
for i in range(60):
    ans += g[i]*(n-g[i])*(pow(2,i,1000000007))
    ans = ans % (1000000007)
print(ans%(1000000007))

### FIXED CODE ###

import numpy as np

n = int(input())
arr = np.array([int(i) for i in input().split()])
mod = 10 ** 9 + 7
s = 0

for i in range(60):
    c1 = np.count_nonzero(arr & 1) # 自分がnp.sumを利用したがどうしても正解になれなかった。なぜ？
    s += 2 ** i * c1 * (n - c1)
    arr >>= 1

print(s % mod)
### BUGGY CODE ###

# -*- coding: utf-8 -*-
import itertools
N,M,Q=map(int,input().split())
abcd=[]
for _ in range(Q):
    abcd.append(list(map(int,input().split())))
Abase=[]
for a in range(1,M+1):
    Abase.append(a)
Abase2=[]
for _ in range(N):
    Abase2=Abase2+Abase
A=set(itertools.combinations(Abase2,N))
A2=set([tuple(sorted(x)) for x in A])
ans=0
for i in A2:
    temp=0
    for j in abcd:
        if i[j[1]-1]-i[j[0]-1]==j[2]:
            temp=temp+j[3]
    if temp>=ans:
        ans=temp
print(ans)

### FIXED CODE ###

# -*- coding: utf-8 -*-
import itertools
N,M,Q=map(int,input().split())
abcd=[]
for _ in range(Q):
    abcd.append(tuple(map(int,input().split())))
Abase=[]
for a in range(1,M+1):
    Abase=Abase+[a]
A=set(itertools.combinations_with_replacement(Abase,N))
ans=0
for i in A:
    temp=0
    for j in abcd:
        if i[j[1]-1]-i[j[0]-1]==j[2]:
            temp=temp+j[3]
    if temp>=ans:
        ans=temp
print(ans)
### BUGGY CODE ###

from itertools import combinations
from collections import deque
s = input()
n = int(input())

le = len(s)
seed = tuple(combinations(range(le + 1), 2))

res = deque()
res.append("zzzzzzzzzzzzzzzzzzzzzzz")
res.append("zzzzzzzzzzzzzzzzzzzzzzz")
res.append("zzzzzzzzzzzzzzzzzzzzzzz")
res.append("zzzzzzzzzzzzzzzzzzzzzzz")
res.append("zzzzzzzzzzzzzzzzzzzzzzz")

for i, j in seed:
    ch = s[i:j]
    if ch in res:
        continue
    elif ch < max(res):
        res.remove(max(res))
        res.append(ch)

ans = sorted(res)
print(ans[n - 1])


### FIXED CODE ###

from itertools import combinations
s = input()
n = int(input())

le = len(s)
tmp = s[:5]

for i in range(le - 4):
    tmp = min(tmp, s[i:i+5])

seed = tuple(combinations(range(min(6, le+1)), 2))
res = set()
for i, j in seed:
    res.add(tmp[i:j])
ans = sorted(res)
print(ans[n - 1])
### BUGGY CODE ###

N, M =      map(int, input().split())
S    = list(map(int, input().split()))
T    = list(map(int, input().split()))
assert len(S) == N
assert len(T) == M

modulo = 10 ** 9 + 7

# tab[j][i] = S[i] == T[j]
tab = [[s == t for s in S] for t in T]

# 番兵
for t in tab:
    t.append(1)
tab.append([1] * (len(S) + 1))

# 右下から計算
for j in range(M - 1, -1, -1):
    for i in range(N - 1, -1, -1):
        v  = tab[j + 1][i] + tab[j][i + 1]
        v -= 0 if tab[j][i] else tab[j + 1][i + 1]
        tab[j][i] = v % modulo

print(tab[0][0])


### FIXED CODE ###

N, M =      map(int, input().split())
S    = list(map(int, input().split()))
T    = list(map(int, input().split()))
assert len(S) == N
assert len(T) == M

modulo = 10 ** 9 + 7

# tab[j][i] = S[i] == T[j]
tab = [[s == t for s in S] for t in T]

# 番兵
for t in tab:
    t.append(1)
tab.append([1] * (len(S) + 1))

# 右下から計算
for j in range(M - 1, -1, -1):
    for i in range(N - 1, -1, -1):
        v  = tab[j + 1][i] + tab[j][i + 1]
        v -= 0 if tab[j][i] else tab[j + 1][i + 1]
        tab[j][i] = v % modulo

print(tab[0][0])
### BUGGY CODE ###

def main():
	import sys
	input = sys.stdin.readline
	k = int(input())
	h = tuple(map(int,input().split()))
	ans = 1
	for i in range(k):
		ans *= h[i]
	if ans <= 10 **18:
		print(ans)
	else:
		print(-1)
	
 
 
if __name__ == '__main__':
	main()

### FIXED CODE ###

def main():
	k = int(input())
	h = tuple(map(int,input().split()))
	ans = 1
	avoid = 0
	if (0 in h):
		print(0)
	else:
		for i in range(k):
			ans = h[i] * ans
			if ans > 10 **18:
				print(-1)
				avoid = 1
				break
		if avoid == 0:
			print(ans)
	


if __name__ == '__main__':
	main()
### BUGGY CODE ###

n = int(input())
P = [i for i in range(1, n + 1)]
P = P[1:] + [P[0]]

M = [(i + 1) % P[i] for i in range(n)]
print(sum(M))

### FIXED CODE ###

n = int(input())
print(int(n * (n - 1) // 2))
### BUGGY CODE ###

n, k = map(int, input().split())

l = []
for i in range(n):
    d = int(input())
    l.append(d)

p = max(l)
while True:
    sm_k = 0
    k_no = 1
    for li in l:
        if sm_k + li > p:
            k_no += 1
            if k_no > k:
                break
            sm_k = li
        else:
            sm_k += li

    # print(p, k_no)
    if k_no <= k:
        print(p)
        break

    p += 1



### FIXED CODE ###

MAX_P = 100000 * 10000

n, k = map(int, input().split())
w = list()
for _ in range(n):
    w.append(int(input()))


# k台のトラックに、積載量Pでいくつ荷物が載せられるか
# 0 <= r <= n
def check(p):
    k_no = 1
    tmp = 0
    for i, wi in enumerate(w):
        if wi > p:
            return i
        if tmp + wi > p:
            if k_no == k:
                return i
            else:
                k_no += 1
                tmp = wi
        else:
            tmp += wi
    return len(w)


def solve():
    left = 1
    right = MAX_P

    while right - left > 1:
        mid = (left + right) // 2
        v = check(mid)  # v個載せられる
        if v < n:
            left = mid
        else:
            right = mid

    # print("left", left)
    # print("right", right)
    if check(left) >= n:
        return left
    else:
        return right

# for i in range(10):
#     print(i, check(i))

print(solve())
### BUGGY CODE ###

import heapq
n, m = map(int, input().split())
a = list(map(lambda x: -int(x), input().split()))
a.sort()
hq = [(a[0] + a[0], 0, 0)]
s = set()
ans = 0
for _ in range(m):
    x, i, j = heapq.heappop(hq)
    ans += x
    if i < n - 1 and (i + 1) * n + j not in s:
        heapq.heappush(hq, (a[i + 1] + a[j], i + 1, j))
        s.add((i + 1) * n + j)
    if j < n - 1 and i * n + j + 1 not in s:
        heapq.heappush(hq, (a[i] + a[j + 1], i, j + 1))
        s.add(i * n + j + 1)
print(-ans)


### FIXED CODE ###

from bisect import bisect_left
n, k = map(int, input().split())
a = list(map(int, input().split()))
a.sort()
l, r = 0, 10000000000
while r - l > 1:
    m = (l + r) // 2
    res = 0
    for x in a:
        res += n - bisect_left(a, m - x)
    if res >= k:
        l = m
    else:
        r = m
b = [0] * (n + 1)
for i in range(1, n + 1):
    b[i] = b[i - 1] + a[n - i]
cnt = 0
ans = 0
for x in a:
    t = n - bisect_left(a, l - x)
    ans += b[t] + x * t
    cnt += t
print(ans - (cnt - k) * l)
### BUGGY CODE ###

N,P=map(int,input().split())
maxfac = round(P**(1/N))
# print(range(1,maxfac+1))
if N==1:
    print(P)
    exit()
for i in range(1,maxfac+2)[::-1]:
    p = i**N
    # print(P%p)
    if P%p == 0:
        print(i)
        break


### FIXED CODE ###

N,P=map(int,input().split())
maxfac = int(P**(1/N))
# print(range(1,maxfac+1))
if N==1:
    print(P)
    exit()
elif N > 10**6:
    print(1)
    exit()
for i in range(1,maxfac+2)[::-1]:
    p = i**N
    # print(P%p)
    if P%p == 0:
        print(i)
        break
### BUGGY CODE ###

from functools import reduce
import operator
import heapq
def SME(start,end):
    A = []
    if end > N : end = N
    count = 0
    for i,x in enumerate(Whole[start:end]):
        heapq.heappush(A,[x,i])
    for j in range(start,end):
        a = heapq.heappop(A)
        B = 1
        for i in ANS[a[1]:a[1]+L] : B *= i
        if B!=0 : continue
        for i in range(L):
            idx = a[1] + i
            try :
                if ANS[idx] == INIT:
                    ANS[idx] = a[0]
                    count += 1
            except IndexError : continue
        if count > N * parameter : break
    for i in range(L):
        if ANS[i] == INIT : ANS[i] = min(Whole[:i+1])
    for i in range(L,N):
        if ANS[i] == INIT : ANS[i] = min(Whole[i+1-L:i+1])
    return ANS

[N,L] = [int(x) for x in input().split()]
Whole = [int(x) for x in input().split()]
parameter = 0.995
INIT = 0
ANS = [INIT]*N
ANS = SME(0, N)
for i in ANS[L-1:-1]:print(i, end=" ")
print(ANS[-1])

### FIXED CODE ###

def ascend(a,b):
    mini = min(A[a:a+L])
    ans[a] = mini
    for i in range(a+1,b):
        if A[i+L-1] <= mini : mini = A[i+L-1]
        elif A[i-1] == mini : mini = min(A[i:i+L])
        ans[i] = mini

def descend(a,b):
    mini = min(A[b-1:b+L-1])
    ans[b-1] = mini
    for i in range(b-2,a-1,-1):
        if A[i] <= mini : mini = A[i]
        elif A[i+L] == mini: mini = min(A[i:i+L])
        ans[i] = mini
    
[N,L] = [int(x) for x in input().split()]
A = [int(x) for x in input().split()]
ans = [None]*(N-L+1)
count = 0;
if N > 10 ** 4:
    for i in range(100):
        if A[i+1] > A[i] : count += 1
    if count > 80 : descend(0, N-L+1)
    else : ascend(0,N-L+1)
else :
    ascend(0, N-L+1)
for i in ans[:-1] : print(i, end=" ")
print(ans[-1])
### BUGGY CODE ###

N = int(input())
T = [int(i) for i in input().split()]
L = [0]
for i in range(N):
    L.append(L[i] + T[i])
V = [int(i) for i in input().split()]

def VM(x, i): #x秒後に条件iがとり得る速度
    if 0 <= x <= L[i]:
        return V[i] + (L[i] - x)
    elif L[i] < x <= L[i+1]:
        return V[i]
    else:
        return V[i] + (x - L[i+1])

minV = [float("inf") for i in range(2*L[-1] + 1)]
for i in range(2*L[-1]+1):
    for j in range(N):
        minV[i] =min(minV[i], VM(i*0.5, j))
    minV[i] = min(minV[i], i*0.5, L[-1] - i*0.5)

Ans = 0
for i in range(2*L[-1]):
    Ans += (minV[i] + minV[i+1])/4
print(Ans)

### FIXED CODE ###

N = int(input())
T = [int(i) for i in input().split()]
L = [0]
for i in range(N):
    L.append(L[i] + T[i])
V = [int(i) for i in input().split()]

def VM(x, i): #x秒後に条件iがとり得る速度
    if 0 <= x <= L[i]:
        return V[i] + (L[i] - x)
    elif L[i] < x <= L[i+1]:
        return V[i]
    else:
        return V[i] + (x - L[i+1])

Search = [[] for i in range(N)] #設定された最高速度よりも小さくなり得る条件を探索
for i in range(N):
    for j in range(N):
        if i < j and V[i] - V[j] > L[j] - L[i+1]:
            Search[i].append(j)
        elif i > j and V[i] - V[j] > L[i] - L[j+1]:
            Search[i].append(j)

maxV = [float("inf") for i in range(2*L[-1]+1)]
for i in range(N):
    for j in range(2 * L[i], 2 * L[i+1] + 1):
        maxV[j] = min(V[i], j * 0.5, L[-1] - j * 0.5) #初期化
        for s in Search[i]:
            maxV[j] = min(maxV[j], VM(j * 0.5, s))
Ans = 0
for i in range(2*L[-1]):
    Ans += (maxV[i] + maxV[i+1])/4
print(Ans)
### BUGGY CODE ###

n, m = [int(x) for x in input().split()]
img_a = []
img_b = []

for i in range(n):
    img_a.append(input())

for i in range(m):
    img_b.append(input())

ans = "No"
for a in range(n - m + 1):
    dup_a = img_a.copy()
    dup_b = img_b.copy()
    flag = True
    while flag:
        for b in range(m):
            if dup_b[b] in dup_a[b+a]:
                if b == 0:
                    index = dup_a[a].index(dup_b[0])
                current_index = dup_a[b+a].index(dup_b[b])
                if current_index == index:
                    continue
                elif current_index > index:
                    for line in dup_a:
                        line = line[current_index:]
                    break
                else:
                    for line in dup_a:
                        line = line[index:]
                    break
            else:   # if not substring in string.
                flag = False
                break

        else: # if not loop broken.
            ans = "Yes"
            break
        

print(ans)





### FIXED CODE ###

n, m = [int(x) for x in input().split()]
img_a = []
img_b = []

for i in range(n):
    img_a.append(input())

for i in range(m):
    img_b.append(input())

ans = "No"
for a in range(n - m + 1):
    border = 0
    flag = True
    while flag:
        for b in range(m):
            if img_b[b] in img_a[b+a][border:]:
                if b == 0:
                    index = img_a[a].index(img_b[0], border)
                current_index = img_a[b+a].index(img_b[b], border)
                if current_index == index:
                    continue
                elif current_index > index:
                    border = current_index
                    break
                else:
                    border = index
                    break
            else:   # if not substring in string.
                flag = False
                break

        else: # if not loop broken.
            ans = "Yes"
            break
        

print(ans)
### BUGGY CODE ###

n,k,q=map(int,input().split())
a=[(input()) for l in range(q)]
import collections
c = collections.Counter(a)
l=([int(i[0]) for i in c.items() if i[1] > q-k])
#print(l)
for i in range(n):
    if l.count(i+1)>0:
        print('Yes')
    elif q-k<0:
        print('Yes')
    else:
        print('No')

### FIXED CODE ###

n,k,q=map(int,input().split())
a=[(input()) for l in range(q)]
#if q-k<0:
 #   for i in range(n):
  #      print('Yes')
#else:
import collections
c = collections.Counter(a)
for i in range(n):
    #print(k-c[str(i+1)])
    if q-c[str(i+1)]<k:
        print('Yes')
    else:
        print('No')
### BUGGY CODE ###

X = int(input())
pn=[2]
for L in range(3, 2*X):
    chk=True
    for L2 in pn:
        if L%L2 == 0:chk=False
    if chk==True:pn.append(L)

for i in range(len(pn)):
    if pn[i]>X:
        print(pn[i])
        break
    elif pn[i]==X:
        print(X)
        break

### FIXED CODE ###

X = int(input())
def primes(n):
    is_prime = [True] * (n + 1)
    is_prime[0] = False
    is_prime[1] = False
    for i in range(2, int(n**0.5) + 1):
        if not is_prime[i]:
            continue
        for j in range(i * 2, n + 1, i):
            is_prime[j] = False
    return [i for i in range(n + 1) if is_prime[i]]

tmp = primes(2*X)

for i in range(len(tmp)):
    if tmp[i]>X:
        print(tmp[i])
        break
    elif tmp[i]==X:
        print(X)
        break
### BUGGY CODE ###

n = int(input())
p = list(map(int, input().split()))
ans = 0

for i in range(n):
    ans += 1
    for j in range(i):
        if p[i] > p[j]:
            ans -= 1
            break

print(ans)

### FIXED CODE ###

n = int(input())
p = list(map(int, input().split()))
ans = 0
min = p[0]

for i in range(n):
    if p[i] <= min:
        min = p[i]
        ans += 1

print(ans)
### BUGGY CODE ###

N,K=map(int,input().split())
A=list(map(int,input().split()))
TOWN=[i for i in range(1,N+1)]

#行ったことある町リスト
d=[1]
i=0
while i<K:
  T=A[d[-1]-1]
  if T in d:
    break
  d.append(T)
  i+=1
F=d.index(T)
LOOP_TOWN=d[F:]
q=(K-F)%len(LOOP_TOWN)
print(LOOP_TOWN[q])

### FIXED CODE ###

def main():
  N,K=map(int,input().split())
  A=list(map(int,input().split()))
  n=[0]*N
  #行ったことある町リスト
  d=[1]
  for _ in range(K):
    T=A[d[-1]-1]
    if n[T-1]==1:
      break
    else:
      n[T-1]=1
    d.append(T)
  F=d.index(T)
  LOOP_TOWN=d[F:]
  q=(K-F)%len(LOOP_TOWN)
  print(LOOP_TOWN[q])

if __name__ == "__main__":
    main()
### BUGGY CODE ###

from itertools import permutations
import numpy


def warshall_floyd(d):
    #d[i][j]: iからjへの最短距離
    n = len(d[0])
    for k in range(n):
        for i in range(n):
            for j in range(n):
                d[i][j] = numpy.minimum(d[i][j], d[i][k] + d[k][j])
    return d


N, M, R = [int(x) for x in input().split()]
r = [int(x)-1 for x in input().split()]

INF = float("inf")
route_list = [[INF]*N for _ in range(N)]

for i in range(M):
    a, b, c = [int(x) for x in input().split()]
    route_list[a-1][b-1] = c
    route_list[b-1][a-1] = c

wa_list = warshall_floyd(route_list)
ans = 30**9

for perm in permutations(r):
    # print(perm)
    cur = sum(wa_list[v][u] for v, u in zip(perm, perm[1:]))
    ans = min(ans, cur)

print(int(ans))


### FIXED CODE ###

from itertools import product, permutations


def warshall_floyd(d):
    # d        : nxn adjacent matrix
    for k, i, j in product(range(n), repeat=3):
        if d[i][j] > d[i][k] + d[k][j]:
            d[i][j] = d[i][k] + d[k][j]


INF = float("inf")
n, m, r = map(int, input().split())
r_list = list(map(lambda x: int(x) - 1, input().split()))
d = [[INF] * n for _ in range(n)]
for i in range(n):
    d[i][i] = 0
for i in range(m):
    a, b, c = map(int, input().split())
    a, b = a - 1, b - 1
    d[a][b] = d[b][a] = c
warshall_floyd(d)

ans = float("inf")
for np in permutations(r_list):
    cand = sum([d[np[i]][np[i + 1]] for i in range(r - 1)])
    ans = min(ans, cand)

print(ans)
### BUGGY CODE ###

from collections import Counter

n = int(input())
s = [x for x in [Counter(list(input())) for _ in range(n)]]


alphabet = set('abcdefghijklmnopqrstuvwxyz')
s_list = [''.join([str(s_i[a]) for a in alphabet]) for s_i in s]

count = 0
i = 0

for x in s_list:
  i += 1
  temp = s_list[i:]
  hoge = s[i:]
  for y in temp:
    if y == x:
      count += 1
print(count)

### FIXED CODE ###

def sort_str(s):
  temp = sorted(list(s))
  return ''.join(list(temp))

n = int(input())
s = [input() for _ in range(n)]

s_dict = {}
count = 0

for s_i in s:
  k = sort_str(s_i)
  if k in s_dict:
    count += s_dict[k]
    s_dict[k] += 1
  else:
    s_dict[k] = 1
    
print(count)