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

N, Q = map(int, input().split())
S = input()
query = [list(map(int, input().split())) for _ in range(Q)]
for left, right in query:
    T = S[left - 1:right]
    print(T.count('AC'))

### FIXED CODE ###

N, Q = map(int, input().split())
S = input()
query = [list(map(int, input().split())) for _ in range(Q)]
counter = [0]
for i in range(1, N):
    if S[i - 1] == 'A' and S[i] == 'C':
        counter.append(counter[-1] + 1)
    else:
        counter.append(counter[-1])
for left, right in query:
    print(counter[right - 1] - counter[left - 1])
### BUGGY CODE ###

import sys
import numpy as np
import math
import collections
from collections import deque 
from functools import reduce

# input = sys.stdin.readline

def make_divisors(n):
    lower_divisors , upper_divisors = [], []
    i = 1
    while i*i <= n:
        if n % i == 0:
            lower_divisors.append(i)
            if i != n // i:
                upper_divisors.append(n//i)
        i += 1
    return lower_divisors + upper_divisors[::-1]

n = int(input())
ret = 0
for i in range(1, n+1):
    ls = make_divisors(i)
    ret += i * len(ls)
print(ret)
  




### FIXED CODE ###

n = int(input())
ret = 0
for i in range(1, n+1):
    cnt = n // i
    tt = cnt * (cnt+1) * i // 2
    ret += tt
print(ret)
### BUGGY CODE ###

import math
from functools import reduce

def gcd(*numbers):
    return reduce(math.gcd, numbers)

K = int(input())
ans = 0
for i in range(1, K+1):
  for j in range(1, K+1):
    for k in range(1, K+1):
      ans += gcd(i, j, k)

print(ans)

### FIXED CODE ###

from math import gcd

K = int(input())
ans = 0
for i in range(1, K+1):
  for j in range(1, K+1):
    for k in range(1, K+1):
      ans += gcd(gcd(i, j), k)

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

H, W = map(int, input().split())
sh, sw = map(int, input().split())
gh, gw = map(int, input().split())

sh += 1
sw += 1
gh += 1
gw += 1
s = sh*(W+4)+sw
g = gh*(W+4)+gw
S = [0]*(H+4)
S[0] = ['*']*(W+4)
S[1] = ['*']*(W+4)
S[-2] = ['*']*(W+4)
S[-1] = ['*']*(W+4)
for h in range(2,H+2):
  S[h] = ['*']*2 + list(input()) + ['*']*2

visited = [10**7]*((W+4)*(H+4))
dh1 = [0,1,0,-1]
dw1 = [1,0,-1,0]
dh2 = [2,2,2,2,2,1,1,1,1,0,0,-1,-1,-1,-1,-2,-2,-2,-2,-2]
dw2 = [-2,-1,0,1,2,-2,-1,1,2,-2,2,-2,-1,1,2,-2,-1,0,1,2]

from collections import deque
d = deque()
S[gh][gw] = 'g'
d.append(g)

while len(d)>0:
  a = d.popleft()
  h,w = divmod(a,W+4)
  for i in range(4):
    h1 = h+dh1[i]
    w1 = w+dw1[i]
    a1 = h1*(W+4)+w1
    if S[h1][w1]=='.':
      S[h1][w1]='g'
      d.append(a1)

d = deque()
visited[s] = 0
d.append(s)
ans = 10**8
while len(d)>0:
  a = d.popleft()
  h,w = divmod(a,W+4)
  cnt = visited[a]
  if ans<=cnt:
    continue
  for i in range(4):
    h1 = h+dh1[i]
    w1 = w+dw1[i]
    a1 = h1*(W+4)+w1
    if S[h1][w1]=='g':
      ans = min(ans,cnt)
    if S[h1][w1]=='.':
      if visited[a1]>cnt:
        visited[a1]=cnt
        d.append(a1)
  for i in range(20):
    h2 = h+dh2[i]
    w2 = w+dw2[i]
    a2 = h2*(W+4)+w2
    if S[h2][w2]=='g':
      ans = min(ans,cnt+1)
    if S[h2][w2]=='.':
      if visited[a2]>cnt+1:
        visited[a2]=cnt+1
        d.append(a2)
if ans==10**8:
  ans = -1
print(ans)

### FIXED CODE ###

H, W = map(int, input().split())
sh, sw = map(int, input().split())
gh, gw = map(int, input().split())

sh += 1
sw += 1
gh += 1
gw += 1
s = sh*(W+4)+sw
g = gh*(W+4)+gw
S = [0]*(H+4)
S[0] = '*'*(W+4)
S[1] = '*'*(W+4)
S[-2] = '*'*(W+4)
S[-1] = '*'*(W+4)
for h in range(2,H+2):
  S[h] = '**' + input() + '**'

visited = [10**7]*((W+4)*(H+4))
dh1 = [0,1,0,-1]
dw1 = [1,0,-1,0]
dh2 = [2,2,2,2,2,1,1,1,1,0,0,-1,-1,-1,-1,-2,-2,-2,-2,-2]
dw2 = [-2,-1,0,1,2,-2,-1,1,2,-2,2,-2,-1,1,2,-2,-1,0,1,2]

from collections import deque

d = deque()
visited[s] = 0
d.append(s)
ans = 10**8
while len(d)>0:
  a = d.popleft()
  h,w = divmod(a,W+4)
  cnt = visited[a]
  if ans<=cnt:
    continue
  for i in range(4):
    h1 = h+dh1[i]
    w1 = w+dw1[i]
    a1 = h1*(W+4)+w1
    if (h1,w1)==(gh,gw):
      ans = min(ans,cnt)
    if S[h1][w1]=='.':
      if visited[a1]>cnt:
        visited[a1]=cnt
        d.appendleft(a1)
  for i in range(20):
    h2 = h+dh2[i]
    w2 = w+dw2[i]
    a2 = h2*(W+4)+w2
    if (h2,w2)==(gh,gw):
      ans = min(ans,cnt+1)
    if S[h2][w2]=='.':
      if visited[a2]>cnt+1:
        visited[a2]=cnt+1
        d.append(a2)
if ans==10**8:
  ans = -1
print(ans)
### BUGGY CODE ###

N, Q = map(int, input().split())
order_dict = {}
reversed_dict = {}
Q_dict = {}
have_relationlist = {}
ans = []
for i in range(N):
    if i != 0:
        a, b = map(int, input().split())
        if not a in order_dict:
            order_dict[a] = set()
        if not b in reversed_dict:
            reversed_dict[b] = set()
        order_dict[a].add(b)
        reversed_dict[b].add(a)
    ans.append(0)
    have_relationlist[i+1] = set()
    have_relationlist[i+1].add(i+1)

for b in reversed(range(2, N+1)):
    for a in reversed_dict[b]:
        if a in order_dict:
            have_relationlist[a] |= order_dict[a]
        have_relationlist[a] |= have_relationlist[b]

for i in range(Q):
    p, x = map(int, input().split())
    for a in have_relationlist[p]:
        ans[a-1] += x

print(' '.join(map(str, ans)))

### FIXED CODE ###

N, Q = map(int, input().split())
order_dict = {}
ans = [0]*N

for i in range(N):
    if i != 0:
        a, b = map(int, input().split())
        if not a in order_dict:
            order_dict[a] = set()
        order_dict[a].add(b)
    

for i in range(Q):
    p, x = map(int, input().split())
    ans[p-1] += x

for a in range(N+1):
    if a in order_dict:
        for b in order_dict[a]:
            ans[b-1] += ans[a-1]


print(' '.join(map(str, ans)))
### BUGGY CODE ###

import sys
sys.setrecursionlimit(10**7)
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LI_(): return [int(x) - 1 for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def II(): return int(sys.stdin.readline())
def SI(): return sys.stdin.readline().strip()
INF = 10 ** 18
MOD = 10 ** 9 + 7

from functools import lru_cache


def main():
    N, M = LI()
    es = [[x for x in LI()] for _ in range(M)]

    from collections import defaultdict
    outs = defaultdict(list)  # ノードが int なら、[[] for _ in range(n+1)] でもよさそう。
    # ins = defaultdict(int)    # ノードが int なら、 [0 for _ in range(n+1)] でもよさそう。
    for from_v, to_v in es:
        outs[from_v].append(to_v)
        # ins[to_v] += 1

    @lru_cache()
    def max_len(v):
        if not outs[v]:
            return 0
        else:
            return max([max_len(x)+1 for x in outs[v]])

    print(max([max_len(x) for x in range(1,N+1)]))

main()

### FIXED CODE ###

import sys
sys.setrecursionlimit(10**7)
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LI_(): return [int(x) - 1 for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def II(): return int(sys.stdin.readline())
def SI(): return sys.stdin.readline().strip()
INF = 10 ** 18
MOD = 10 ** 9 + 7

def main(): 
    # 入力
    N, M = LI()
    es = [[x for x in LI()] for _ in range(M)]
    all_v = list(range(1, N+1))

    # まず、outs, ins を定義する。
    # outs はグラフの関連リスト表記。
    # outs = {node1: [node2, node3, ...], node2: [...], ...}
    # ins は、そのノードに入る辺の本数。
    # ins  = {node1: 1, node2: 2, ...}

    from collections import defaultdict

    outs = defaultdict(list)  # ノードが int なら、[[] for _ in range(n+1)] でもよさそう。
    ins = defaultdict(int)    # ノードが int なら、 [0 for _ in range(n+1)] でもよさそう。
    for from_v, to_v in es:
        outs[from_v].append(to_v)
        ins[to_v] += 1


    # つぎに、探索キューを初期化する。
    # ノードを全探索し、ins が 0 のものを探索キューに入れておく。

    from collections import deque
    q = deque()
    for v in all_v:
        if ins[v] == 0:
            q.append((v, 0))  # node, depth


    # トポロジカルソート本体（要は幅優先探索）

    res = []
    depth_max = 0
    while q:
        v1, depth = q.popleft()
        res.append(v1)
        for v2 in outs[v1]:
            ins[v2] -= 1
            if ins[v2] == 0:
                q.append((v2, depth+1))
                depth_max = max(depth_max, depth+1)


    # # 結果
    # print(res)  # ソート済みリスト

    # # 閉路判定（閉路はあるか？）
    # print(False if len(res) == n else True)  # res の長さがノード数と一致していたら、閉路なし。そうでなければ閉路あり。

    # 最大の深さ：深さの情報も同時に埋め込んでおく（上のコードにはもう埋め込んである）。
    print(depth_max)


main()
### BUGGY CODE ###

from itertools import combinations

N = int(input())
L = list(map(int, input().split(" ")))

def satisfy_conditions(L):
    a = L[0]
    b = L[1]
    c = L[2]
    if a < b + c and b < c + a and c < a + b:
        return True
    else:
        return False

num_triangles = 0

stick_combos = combinations(L, 3)
for stick_combo in stick_combos:
    if satisfy_conditions(stick_combo):
        num_triangles += 1
print(num_triangles)


### FIXED CODE ###

from bisect import bisect_left

n = int(input())
l = list(map(int, input().split()))
l.sort()

ans = 0
for i in range(n):
    for j in range(i+1, n):
        endpt = bisect_left(l, l[i] + l[j])
        ans += endpt-j-1

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

class Factorial:
    def __init__(self, n, mod):
        self.f = [1]
        self.mod = mod
        for j in range(1, n + 1):
            self.f.append(self.f[-1] * j % mod)
        self.i = [pow(self.f[-1], mod - 2, mod)]
        for j in range(n, 0, -1):
            self.i.append(self.i[-1] * j % mod)
        self.i.reverse()
    def factorial(self, j):
        return self.f[j]
    def ifactorial(self, j):
        return self.i[j]
    def comb(self, n, k):
        return self.f[n] * self.i[n - k] % self.mod * self.i[k] % self.mod if n >= k else 0



K = int(input())
S = list(input())
s = len(S)

N = K + s

MOD = 10 ** 9 + 7

C = Factorial(N + 10, MOD)

lst26 = [1] * (N + 2)
lst25 = [1] * (N + 2)
for i in range(N + 1):
    lst26[i + 1] = (lst26[i] * 26) % MOD
    lst25[i + 1] = (lst25[i] * 25) % MOD

ans = 0
for x in range(K + 1):
    tmp = ((C.factorial(s - 1 + K - x) * C.ifactorial(s - 1)) % MOD) * C.ifactorial(K - x)
    tmp %= MOD
    tmp = (tmp * lst26[x]) % MOD
    tmp = (tmp * lst25[K - x]) % MOD
    ans = (ans + tmp) % MOD

print (ans)    



### FIXED CODE ###

class Factorial:
    def __init__(self, n, mod):
        self.f = [1]
        self.mod = mod
        for j in range(1, n + 1):
            self.f.append(self.f[-1] * j % mod)
        self.i = [pow(self.f[-1], mod - 2, mod)]
        for j in range(n, 0, -1):
            self.i.append(self.i[-1] * j % mod)
        self.i.reverse()
    def factorial(self, j):
        return self.f[j]
    def ifactorial(self, j):
        return self.i[j]
    def comb(self, n, k):
        return self.f[n] * self.i[n - k] % self.mod * self.i[k] % self.mod if n >= k else 0



K = int(input())
S = list(input())
s = len(S)

N = K + s

MOD = 10 ** 9 + 7

C = Factorial(N + 10, MOD)

lst26 = [1] * (K + 2)
lst25 = [1] * (K + 2)
for i in range(K + 1):
    lst26[i + 1] = (lst26[i] * 26) % MOD
    lst25[i + 1] = (lst25[i] * 25) % MOD

ans = 0
for x in range(K + 1):
    tmp = ((C.factorial(s - 1 + K - x) * C.ifactorial(s - 1)) % MOD) * C.ifactorial(K - x)
    tmp %= MOD
    tmp = (tmp * lst26[x]) % MOD
    tmp = (tmp * lst25[K - x]) % MOD
    ans = (ans + tmp) % MOD

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

#!/usr/bin/env python3
import sys


def solve(H: int, N: int, A: "List[int]", B: "List[int]"):
    mp = [0] * (H + 1)
    for i in range(1, len(mp)):
        m = 10 ** 9
        for j in range(N):
            if i - A[j] < 0:
                m = min(m, mp[0] + B[j])
            else:
                m = min(m, mp[i - A[j]] + B[j])
        mp[i] = m
    print(mp[-1])   


# Generated by 1.1.6 https://github.com/kyuridenamida/atcoder-tools  (tips: You use the default template now. You can remove this line by using your custom template)
def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    H = int(next(tokens))  # type: int
    N = int(next(tokens))  # type: int
    A = [int()] * (N)  # type: "List[int]"
    B = [int()] * (N)  # type: "List[int]"
    for i in range(N):
        A[i] = int(next(tokens))
        B[i] = int(next(tokens))
    solve(H, N, A, B)

if __name__ == '__main__':
    main()


### FIXED CODE ###

#!/usr/bin/env python3
import sys


def solve(H: int, N: int, A: "List[int]", B: "List[int]"):
    mp = [0] * (H + 1)
    for i in range(1, len(mp)):
        ml = [0 for j in range(N)]
        for j in range(N):
            if i - A[j] < 0:
                ml[j] = mp[0] + B[j]
            else:
                ml[j] = mp[i - A[j]] + B[j]
        mp[i] = min(ml)
    print(mp[-1])   


# Generated by 1.1.6 https://github.com/kyuridenamida/atcoder-tools  (tips: You use the default template now. You can remove this line by using your custom template)
def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    H = int(next(tokens))  # type: int
    N = int(next(tokens))  # type: int
    A = [int()] * (N)  # type: "List[int]"
    B = [int()] * (N)  # type: "List[int]"
    for i in range(N):
        A[i] = int(next(tokens))
        B[i] = int(next(tokens))
    solve(H, N, A, B)

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

import sys
input = sys.stdin.readline

H,N = map(int, input().split())
table = []
dp = [10**9]*(H+1)
dp[0] = 0

for i in range(N):
    a,b = map(int, input().split())
    table.append((a,b))

for i in range(1,H+1):
#    print(dp)
    for j in range(N):
        a,b = table[j]
        if i<a:
            dp[i] = min(dp[i],b)
        else:
            dp[i] = min(dp[i],dp[i-a]+b)
print(dp[-1])

### FIXED CODE ###

import sys
input = sys.stdin.readline

H,N = map(int, input().split())
table = []
dp = [10**9]*(H+1)
dp[0] = 0

for i in range(N):
    a,b = map(int, input().split())
    table.append((a,b))

for i in range(1,H+1):
#    print(dp)
    for j in range(N):
        a,b = table[j]
        if i<a:
            dp[i] = min(dp[i],b)
        else:
            dp[i] = min(dp[i],dp[i-a]+b)
print(dp[-1])
### BUGGY CODE ###

N,start = [int(x) for x in input().split()]
_x = [int(y) for y in input().split()]
x = sorted(_x)
dis = [0 for z in range(N-1)]
count = 0
ans = 1
if N == 1:
    print(abs(x[0]-start))
else:
    for i in range(N-1):
        dis[i] = x[i+1] - x[i]
    D = min(dis)
    ans = 1
    for d in range(2,D+1):
        cite = start
        while True:
            if cite > x[N-1]:
                break
            if cite in x:
                count += 1
            cite += d
        cite = start
        while True:
            if cite < x[0]:
                break
            if cite in x:
                count += 1
            cite -= d
        if count == N:
            ans = d
        count = 0
    print(ans)


### FIXED CODE ###

import math
N,start = [int(x) for x in input().split()]
_x = [int(y) for y in input().split()]
x = [0 for y in range(N)]
for i in range(N):
    x[i] = abs(_x[i] - start)
g = x[0]
for i in range(N):
    g = math.gcd(g,x[i])
print(g)
ans = 1
### BUGGY CODE ###

from sys import stdin
import numpy as np
input = stdin.readline

N = int(input())
A_list = list(map(int, input().split()))
ans_list =np.ones(N)
A_list = np.array(A_list)

for i in range(N-1):
    for j in range(i+1,N):
        if A_list[i] %  A_list[j] == 0:
            ans_list[i] = 0
            if (A_list[j] %  A_list[i] == 0):
                ans_list[j] = 0
        elif(A_list[j] %  A_list[i] == 0):
            ans_list[j] = 0
print(int(np.sum(ans_list)))

### FIXED CODE ###

from sys import stdin
import numpy as np
input = stdin.readline

N = int(input())
A_list = list(map(int, input().split()))
# ans_list =np.ones(N)
# A_list = np.array(A_list)

# for i in range(N-1):
#     for j in range(i+1,N):
#         if A_list[i] %  A_list[j] == 0:
#             ans_list[i] = 0
#             if (A_list[j] %  A_list[i] == 0):
#                 ans_list[j] = 0
#         elif(A_list[j] %  A_list[i] == 0):
#             ans_list[j] = 0
# print(int(np.sum(ans_list)))
A_set = list(set(A_list))
maxA =  A_set[-1]
dp = [1] * (( 10 ** 6) + 1)

cntli = [0] * (( 10 ** 6) + 1)
unique =[]
for i in A_list:
    cntli[i] += 1
for i in range((( 10 ** 6) + 1)):
    if cntli[i] == 1:
        unique.append(i)

for elem in A_set:
    for i in range(2 * elem,  10 ** 6 + 1, elem):
        dp[i] = 0

ans = 0
for i in unique:
    if not (dp[i] == 0):
        ans += 1

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

import math
import copy
 
d,g = [int(i) for i in input().split()]
P = []
C = []
for i in range(d):
    p,c = [int(i) for i in input().split()]
    P.append(p)
    C.append(c)

# cnt = 0
# def count():
#     global cnt
#     cnt+=1
#     print(cnt)

def flag(point,P,now):
    if point+100*(now+1)*P >= g: return 1
    else: return 0

m = 10**9
def score(point = 0, n = 0, now=-1, done=[]):
    global m
    if m <= n: return
    elif point >= g: m = n
    elif flag(point,P[now],now):
        n += math.ceil((g-point)/(100*(now+1)))
        if m > n: m = n
    else:
        done = copy.copy(done)
        done.append(now)
        if now == -1:
            for i in range(d):
                score(point, n, i, done)
        elif m <= n+P[now]: return
        else:
            for i in range(d):
                if not i in done:
                    score(point+P[now]*100*(now+1) + C[now], n + P[now], i, done)

score()
print(m)

### FIXED CODE ###

import math
 
d,g = [int(i) for i in input().split()]
P = []
C = []
for i in range(d):
    p,c = [int(i) for i in input().split()]
    P.append(p)
    C.append(c)

# cnt = 0
# def count():
#     global cnt
#     cnt+=1
#     print(cnt)

def flag(point,P,now):
    if point+100*(now+1)*(P-1) >= g: return 1
    elif point+100*(now+1)*P + C[now] >= g: return 2
    else: return 0

m = 10**9
def score(point = 0, n = 0, now=-1, remain = list(range(d))):
    global m
    if m <= n: return
    elif now == -1:
        for i in remain:
            score(point, n, i, remain)
    elif point >= g: m = n
    elif flag(point,P[now],now) == 1:
        n += math.ceil((g-point)/(100*(now+1)))
        if m > n: m = n
    elif flag(point,P[now],now) == 2:
        n += P[now]
        if m > n: m = n
    else:
        if m <= n+P[now]: return
        else:
            remain = remain[:]
            remain.remove(now)
            nxtp = point + P[now]*100*(now+1) + C[now]
            for i in remain:
                score(nxtp, n + P[now], i, remain)

score()
print(m)
### BUGGY CODE ###

n = int(input())

n_list = [i for i in range(1, n)]
ans = sum(n_list)
print(ans)


### FIXED CODE ###

from decimal import Decimal


n = int(input())

ans = (Decimal((n - 1) * n) / 2)
print(ans)
### BUGGY CODE ###

N = int(input())
i = 1
ans = 0
while i <= N ** 0.5:
  if N%i == 0:
    ans = len(str(N//i))
  i+1
print(ans)

### FIXED CODE ###

N = int(input())
ans = 1
for i in range(1,int(N**0.5)+1):
    if N%i == 0:
        ans = max(ans,i)
print(len(str(int(N/ans))))
### BUGGY CODE ###

def main ():
    N = int(input())
    A = list(map(int,input(). split ()))
    if 0 in A:
        print(0)
        return
    prod = 1
    for a in A:
        prod *= a
    if prod > 1000000000000000000:
        print(-1)
        return
    print(prod)
main ()

### FIXED CODE ###

def main ():
    N = int(input())
    A = list(map(int,input(). split ()))
    if 0 in A:
        print(0)
        return
    prod = 1
    for a in A:
        prod *= a
        if prod > 1000000000000000000:
            print(-1)
            return
    print(prod)
main ()
### BUGGY CODE ###

from bisect import bisect_left
import itertools
N=int(input())
A=list(map(int,input().split()))
B=[0]*N
A.sort()
t=0
for i in range(N):
    while True:
        if 2**t<=A[i]<2**(t+1):
            break
        t+=1
    B[i]=2**(t+1)-A[i]
i=N-1
count=0
while i>0:
    b=bisect_left(A,B[i])
    if A[b]==B[i] and b!=i:
        A=list(itertools.chain(A[:b],A[b+1:i]))
        B=list(itertools.chain(B[:b],B[b+1:i]))
        count+=1
        i-=2
    else:
        A=A[:i]
        B=B[:i]
        i-=1
print(count)

### FIXED CODE ###

from bisect import bisect_left
N=int(input())
A=list(map(int,input().split()))
B=[0]*N
A.sort()
t=0
for i in range(N):
    while 2**t<=A[i]:
        if 2**t<=A[i]<2**(t+1):
            break
        t+=1
    B[i]=2**(t+1)-A[i]
i=N-1
count=0
flag=[0]*N
for i in range(N-1,0,-1):
    if flag[i]==1:
        continue
    flag[i]=1
    b=bisect_left(A,B[i])
    if A[b]==B[i] and flag[b]==0:
        flag[i]=1
        flag[b]=1
        A[b]-=1
        count+=1
print(count)
### BUGGY CODE ###

n=int(input())
a=list(map(int,input().split()))
b=a
k=0
j=0
while len(b)!=1:
    j=b[0]
    b.pop(0)
    k+=j*sum(b)
print(k%(10**9+7))


### FIXED CODE ###

n=int(input())
a=list(map(int,input().split()))
b=[a[0]]
k=0
for i in range(1,n):
    b.append(a[i]+b[i-1])
for i in range(n-1):
    k+=a[i]*(b[n-1]-b[i])
print(k%(10**9+7))
### BUGGY CODE ###

# coding : utf-8

N,M = map(int,input().split(' '))

b = M/N

print(max([i+1 for i in range(int(b)) if M%(i+1) == 0]))

### FIXED CODE ###

from math import sqrt
 
n, m = map(int, input().split())
l = []
for i in range(1, int(sqrt(m)) + 1):
	if m % i == 0:
		l.append(i)
		l.append(m // i)
 
ans = 1
for d in l:
	if d * n <= m:
		ans = max(ans, d)
 
print(ans)
### BUGGY CODE ###

N, Q =map(int,input().split())
S =input()
LR = [list(map(int,input().split())) for i in range(Q)]
isACinit =[0]*N
for i in range(N-1):
    if S[i]=="A" and S[i+1]=="C":
        isACinit[i] = 1
#ans = [0]*Q
#print(isACinit)
ACsum = sum(isACinit)
for i in range(Q):
    if LR[i][1]-LR[i][0]<N//2:
        print(sum(isACinit[LR[i][0]-1:LR[i][1]-1]))
    else:
        print(ACsum-sum(isACinit[:LR[i][0]-1])-sum(isACinit[LR[i][1]-1:]))

### FIXED CODE ###

N, Q =map(int,input().split())
S =input()
LR = [list(map(int,input().split())) for i in range(Q)]
ACnum =[0]*(N+1)
Sofar = 0
for i in range(N-1):
    if S[i]=="A" and S[i+1]=="C":
        Sofar+=1
    ACnum[i+1] = Sofar
ACnum[N]=Sofar
#print(ACnum)
for i in range(Q):
    print(ACnum[LR[i][1]-1]-ACnum[LR[i][0]-1])
### BUGGY CODE ###

n, m = map(int,input().split())
dp = [1]*(n+1)
a = []
for i in range(m):
    ai = int(input())
    a.append(ai)

if 1 in a:
    dp[1] = 0

for i in range(2,n+1):
    if i not in a:
        dp[i] = (dp[i-1] + dp[i-2]) % (10**9+7)
    else:
        dp[i] = 0

print(dp[n])

### FIXED CODE ###

n, m = map(int,input().split())
dp = [1]*(n+1)
a = []
for i in range(m):
    ai = int(input())
    a.append(ai)

for i in a:
    dp[i] = 0

for i in range(2,n+1):
    if dp[i] != 0:
        dp[i] = (dp[i-1] + dp[i-2]) % (10**9+7)

print(dp[n])
### BUGGY CODE ###

import itertools
L = [0]
N = int(input())
A = list(map(int, input().split()))
cnt = 0
for i in range(N):
    L.append(L[-1] + A[i])
L.sort()
ind = list(set(L))
for i in ind:
    n = L.count(i)
    if n > 1:
        cnt += len(list(itertools.combinations(range(n), 2)))
print(int(cnt))

### FIXED CODE ###

from math import factorial as f
L = [0]
N = int(input())
A = list(map(int, input().split()))
cnt = 0
dic = {}
dic[0] = 1
for i in range(N):
    n = L[-1] + A[i]
    L.append(n)
    dic.setdefault(n, 0)
    dic[n] += 1
for key in dic.keys():
    if dic[key] > 1:
        cnt += f(dic[key]) // f(2) // f(dic[key] - 2)
print(int(cnt))