Problem Statement
import sys
def solve(n, bar, d, m):
res = 0
for a_i in range(len(bar)-m+1):
if sum(bar[a_i:a_i+m]) == d:
res += 1
return res
n = int(input().strip())
bar = list(map(int, input().strip().split(' ')))
d, m = input().strip().split(' ')
d, m = [int(d), int(m)]
result = solve(n, bar, d, m)
print(result)
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