問題

長テーブルのうなぎ屋 (paizaランク B 相当)
https://paiza.jp/learning/long-table

解答

unagiya.py

def is_ocupied_seats(num, place):
    for i in range(place, place+num):
        if seats[i%n] == True:
            return False
    return True

n, m = map(int, input().split())
seats = [False] * n

for _ in range(m):
    num, place = map(int, input().split())
    place -= 1
    if is_ocupied_seats(num, place):
        seats[place:place+num] = [True]*num
    # print(seats, is_ocupied_seats(num, place), place, num)
print(seats.count(True))