数の和

インプリメンテーションコード

# 수들의 합
import sys
sys.stdin = open("input.txt", "rt")
n, m = map(int, input().split())
l = list(map(int,input().split()))
result = 0

for i in range(0, n):
    sum = l[i]
    j = i+1
    while True:
        if sum == m:
            result += 1
            break
        elif sum < m and j < n:
            sum += l[j]
            j += 1
        else:
            break

print(result)

模範解答

import sys
sys.stdin = open("input.txt", 'r')
n, m=map(int, input().split())
a=list(map(int, input().split()))
lt=0
rt=1
tot=a[0]
cnt=0
while True:
    if tot<m:
        if rt<n:
            tot+=a[rt]
            rt+=1
        else:
            break
    elif tot==m:
        cnt+=1
        tot-=a[lt]
        lt+=1
    else:
        tot-=a[lt]
        lt+=1
print(cnt)

差異