Buggy python submission (verdict: Time Limit Exceeded):
#
import sys
import math
#import numpy as np
import itertools
from collections import Counter
# いくつか入力
n,p = (int(i) for i in input().split())
# 空白区切りの数列をリストに代入
s = [int(i) for i in list(input())] 

answer = 0
#print(s)
q=0
x=[]
if p == 2 or p == 5:
    for i in range(n-1,-1,-1):
        if s[i]%p == 0:
            answer += i+1
else:
    d=1
    for i in range(n-1,-1,-1):
        q = (d*s[i]+q)%p
        x.append(q)
        d = (d * 10)
    #print(x)
    counter = Counter(x)
    #print(counter)

    for k in counter:
    #    print(k)
        if k==0:
            answer += counter[k] * (counter[k]+1) // 2
        else:
            answer += counter[k] * (counter[k]-1) // 2

print(answer)



Fixed submission:
#
import sys
import math
#import numpy as np
import itertools
from collections import Counter
# いくつか入力
n,p = (int(i) for i in input().split())
# 空白区切りの数列をリストに代入
s = [int(i) for i in list(input())] 

answer = 0
#print(s)
q=0
x=[]
if p == 2 or p == 5:
    for i in range(n-1,-1,-1):
        if s[i]%p == 0:
            answer += i+1
else:
    d=1
    for i in range(n-1,-1,-1):
        q = (d*s[i]+q)%p
        x.append(q)
        d = (d * 10)%p
    #print(x)
    counter = Counter(x)
    #print(counter)

    for k in counter:
    #    print(k)
        if k==0:
            answer += counter[k] * (counter[k]+1) // 2
        else:
            answer += counter[k] * (counter[k]-1) // 2

print(answer)

Buggy python submission (verdict: Time Limit Exceeded):
# いくつか入力
n,p = (int(i) for i in input().split())
# 空白区切りの数列をリストに代入
s = [int(i) for i in list(input())] 

answer = 0
#print(s)
for i in range(n):
    q=0
    for j in range(i,n):
        q=q*10+s[j]
        if q%p==0:
            answer += 1
print(answer)



Fixed submission:
#
import sys
import math
#import numpy as np
import itertools
from collections import Counter
# いくつか入力
n,p = (int(i) for i in input().split())
# 空白区切りの数列をリストに代入
s = [int(i) for i in list(input())] 

answer = 0
#print(s)
q=0
x=[]
if p == 2 or p == 5:
    for i in range(n-1,-1,-1):
        if s[i]%p == 0:
            answer += i+1
else:
    d=1
    for i in range(n-1,-1,-1):
        q = (d*s[i]+q)%p
        x.append(q)
        d = (d * 10)%p
    #print(x)
    counter = Counter(x)
    #print(counter)

    for k in counter:
    #    print(k)
        if k==0:
            answer += counter[k] * (counter[k]+1) // 2
        else:
            answer += counter[k] * (counter[k]-1) // 2

print(answer)

Buggy python submission (verdict: Time Limit Exceeded):
#
import sys
import math
import numpy as np
import itertools

# いくつか入力
n,p = (int(i) for i in input().split())
# 空白区切りの数列をリストに代入
s = [int(i) for i in list(input())] 

answer = 0
#print(s)
for i in range(n):
    q=0
    for j in range(i,n):
        q=q*10+s[j]
        if q%p==0:
            answer += 1
print(answer)



Fixed submission:
#
import sys
import math
#import numpy as np
import itertools
from collections import Counter
# いくつか入力
n,p = (int(i) for i in input().split())
# 空白区切りの数列をリストに代入
s = [int(i) for i in list(input())] 

answer = 0
#print(s)
q=0
x=[]
if p == 2 or p == 5:
    for i in range(n-1,-1,-1):
        if s[i]%p == 0:
            answer += i+1
else:
    d=1
    for i in range(n-1,-1,-1):
        q = (d*s[i]+q)%p
        x.append(q)
        d = (d * 10)%p
    #print(x)
    counter = Counter(x)
    #print(counter)

    for k in counter:
    #    print(k)
        if k==0:
            answer += counter[k] * (counter[k]+1) // 2
        else:
            answer += counter[k] * (counter[k]-1) // 2

print(answer)