Buggy python submission (verdict: Runtime Error):
from math import factorial
def combi(n,r):
  res = factorial(n) / factorial(r) / factorial(n - r)
  return int(res)

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  if 0 in data:
      data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 1:
    continue
  elif i == 2:
    ans += 1
  else:
    ans += combi(i,2)
print(ans)


Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)

Buggy python submission (verdict: Runtime Error):
from math import factorial
def combi(n,r):
  res = factorial(n) / factorial(r) / factorial(n - r)
  return int(res)

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 1:
    continue
  elif i == 2:
    ans += 1
  else:
    ans += combi(i,2)
print(ans)


Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)

Buggy python submission (verdict: Runtime Error):
from math import factorial
def combi(n,r):
  res = factorial(n) / factorial(r) / factorial(n - r)
  return int(res)

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 1:
    continue
  elif i == 2:
    ans += 1
  else:
    ans += combi(i,2)
print(ans)

Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)

Buggy python submission (verdict: Runtime Error):
from math import factorial
def combi(n,r):
  res = factorial(n) / factorial(r) / factorial(n - r)
  return int(res)

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 1:
    continue
  elif i == 2:
    ans += 1
  else:
    ans += combi(i,2)
print(ans)

Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)

Buggy python submission (verdict: Runtime Error):
from math import factorial
def combi(n,r):
  res = factorial(n) / factorial(r) / factorial(n - r)
  return int(res)

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 1:
    continue
  else:
    ans += combi(i,2)
print(ans)

Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)

Buggy python submission (verdict: Runtime Error):
def cmb(n, r, mod):
    if ( r<0 or r>n ):
        return 0
    r = min(r, n-r)
    return g1[n] * g2[r] * g2[n-r] % mod

mod = 10**9+7 #出力の制限
n = 10**4
g1 = [1, 1] # 元テーブル
g2 = [1, 1] #逆元テーブル
inverse = [0, 1] #逆元テーブル計算用テーブル

for i in range( 2, n + 1 ):
    g1.append( ( g1[-1] * i ) % mod )
    inverse.append( ( -inverse[mod % i] * (mod//i) ) % mod )
    g2.append( (g2[-1] * inverse[-1]) % mod )

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 1:
    continue
  else:
    ans += cmb(i,2,mod)
print(ans)

Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)

Buggy python submission (verdict: Runtime Error):
def cmb(n, r, mod):
    if ( r<0 or r>n ):
        return 0
    r = min(r, n-r)
    return g1[n] * g2[r] * g2[n-r] % mod

mod = 10**9+7 #出力の制限
n = 10**4
g1 = [1, 1] # 元テーブル
g2 = [1, 1] #逆元テーブル
inverse = [0, 1] #逆元テーブル計算用テーブル

for i in range( 2, n + 1 ):
    g1.append( ( g1[-1] * i ) % mod )
    inverse.append( ( -inverse[mod % i] * (mod//i) ) % mod )
    g2.append( (g2[-1] * inverse[-1]) % mod )

N,M = list(map(int,input().split()))
a = list(map(int,input().split()))

data = {}

tmp = 0
for i in range(N):
  tmp += a[i]
  if tmp%M not in data:
    data[tmp%M] = 1
  else:
    data[tmp%M] += 1
else:
  data[0] += 1

cnt = list(data.values())
ans = 0
for i in cnt:
  if i == 0:
    continue
  else:
    ans += cmb(i,2,mod)
print(ans)

Fixed submission:
N, M = list(map(int, input().split()))

D = list(map(int, input().split()))

S = {0 : 1}
t = 0
for i in range(N):
  t = (t + D[i]) % M
  if t in S:
    S[t] += 1
  else:
    S[t] = 1

r = 0

for i in S.values():
  r += i * (i - 1) // 2
  
print(r)