牛客網-牛の目覚まし時計Python

N = int(input())
Hi = []     #       
Mi = []     #       
HM = []     #            
check = 0
for i in range(N):
    h,m = map(int,input().split())
    Hi.append(h)
    Mi.append(m)
    HM.append(h*60+m)
HM = enumerate(HM)
HM = sorted(HM,key=lambda x:x[1])
X = int(input())
h,m = map(int,input().split())
total = h*60+m
left = total-X
for i in range(N):
    if(left==HM[i][1]):
        check = i
        break
    elif(left