Buggy python submission (verdict: Time Limit Exceeded):
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*(10**i))%2019
        dp[x%2019] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)
 
if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict
def main():
    s = list(input())
    n = len(s)
    for i in range(n):
        s[i] = int(s[i])
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+s[n-1-i]*(10**i))%2019
        dp[x%2019] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict
def main():
    s = list(input())
    n = len(s)
    for i in range(n):
        s[i] = int(s[i])
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = x+s[n-1-i]*(10**i)
        dp[x%2019] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict
def main():
    s = list(input())
    n = len(s)
    for i in range(n):
        s[i] = int(s[i])
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = x+s[n-1-i]*(10**i)
        dp[x%2019] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict
def main():
    s = list(input())
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    for i in range(n):
        dp[int(''.join(s[i:]))%2019] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict
def main():
    s = list(input())
    dic1 = defaultdict(int)
    dic2 = defaultdict(int)
    n = len(s)
    for i in range(n):
        s[i] = int(s[i])
    for i in range(n):
        dic3 = defaultdict(int)
        for e in dic1:
            dic3[(e*10+s[i])%2019] = dic1[e]
            dic2[e] += dic1[e]
        dic1 = dic3
        dic1[s[i]] += 1 
    print(dic1[0]+dic2[0])
    
if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    s = list(input())
    n = len(s)
    for i in range(n):
        s[i] = int(s[i])
    dp = [[[0 for _ in range(2019)] for _ in range(2)] for _ in range(n+1)]
    for i in range(n):
        for j in range(2019):
            dp[i+1][1][j] += dp[i][0][j]
            dp[i+1][1][j] += dp[i][1][j]
            dp[i+1][0][((j*10)+s[i])%2019] += dp[i][0][j]
        dp[i+1][0][s[i]] += 1
    print(dp[n][0][0]+dp[n][1][0])
    
if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    s = list(input())
    n = len(s)
    for i in range(n):
        s[i] = int(s[i])
    dp = [[[0 for _ in range(2019)] for _ in range(2)] for _ in range(n+1)]
    for i in range(n):
        for j in range(2019):
            dp[i+1][1][j] += dp[i][0][j]
            dp[i+1][1][j] += dp[i][1][j]
            dp[i+1][0][((j*10)+s[i])%2019] += dp[i][0][j]
        dp[i+1][0][s[i]] += 1
    print(dp[n][0][0]+dp[n][1][0])
    
if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
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
from fractions import gcd
# 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)])

def main():
    s = list(input())
    n = len(s)
    dp = [[[0 for _ in range(2019)] for _ in range(2)] for _ in range(n+1)]
    for i in range(n):
        for j in range(2019):
            dp[i+1][1][j] += dp[i][0][j]
            dp[i+1][1][j] += dp[i][1][j]
            dp[i+1][0][((j*10)+int(s[i]))%2019] += dp[i][0][j]
        dp[i+1][0][int(s[i])] += 1
    print(dp[n][0][0]+dp[n][1][0])
    
if __name__ == "__main__":
    main()

Fixed submission:
def main():
    s = input()
    n = len(s)
    dp = [0 for _ in range(2019)]
    dp[0] += 1
    x = 0
    for i in range(n):
        x = (x+int(s[n-1-i])*pow(10,i,2019))%2019
        dp[x] += 1
    ans = 0
    for i in range(2019):
        ans += (dp[i]*(dp[i]-1))//2
    print(ans)

if __name__ == "__main__":
    main()