Submission #633079

#	Time	Username	Problem	Language	Result	Execution time	Memory
633079		karolb2011	Potatoes and fertilizers (LMIO19_bulves)	Cpython 3	64 / 100	1087 ms	46592 KiB

bulves

import sys
import heapq as hq
input = sys.stdin.readline
n=int(input())
t=0
p=0
s=[]
ww=0
z=[]
for i in range(n):
    pi,bi=list(map(int,input().split()))
    p+=bi-pi
    s.append(p)
if p==0:
    for c in s:
        ww+=abs(c)
elif p==-1:
    for c in s:
        if c<=-1:
            ww-=c
            t-=c+1
        else:
            ww+=c
            t+=c+1                                  
        z.append(ww-t)
    ww=min(t,min(z)+t)
else:
    w=[]
    for c in s:
        if c>0:
            ww+=c
            c=0
        elif c<p:
            ww-=c-p
            c=p
        hq.heappush(w,c)
        if w[0]<c:
            hq.heappush(w,c)
            ww+=abs(hq.heappop(w)-c)
print(ww)

• Subtask 1: 24 / 24
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 0 / 36