# encoding: utf-8
N, M = list(map(int, input().split()))

# TLE
# Amod = [A for A in map(lambda x: int(x) % M , input().split())]
# ans = 0
# for l in range(len(Amod)):
#     acm = 0
#     for r in range(l, len(Amod)):
#         acm = (acm + Amod[r]) % M
#         if acm == 0: ans += 1

# Asym = []
# sym = 0
# for A in map(int, input().split()):
#     sym = (sym + A) % M
#     Asym.append(sym)
# print(Asym)
    
# ans = Asym.count(0)
# for sym in set(Asym):
#     cnt = Asym.count(sym)
#     ans +=  int(cnt * (cnt -  1) / 2)

# print(ans)

Acnt = [0 for i in range(M)]
sym = 0
for A in map(int, input().split()):
    sym = (sym + A) % M
    Acnt[sym] += 1

print(int(Acnt[0] + sum([cnt * (cnt - 1) for cnt in Acnt]) / 2))
