[백준] 1590번 : 캠프가는 영식 - Python(파이썬)

https://www.acmicpc.net/problem/1590

n,t=map(int,input().split())
count=-1
min=10000000
sum=0
for i in range(n):
    si,li,ci=map(int,input().split())
    sum=si
    for j in range(ci):
        if t<=sum:
            count=sum-t
            break
        sum+=li
    if count<=min and count!=-1: min=count
if count==-1: print(count)
else: print(min)