Submission #547857

#	Time	Username	Problem	Language	Result	Execution time	Memory
547857		beaconmc	Art Exhibition (JOI18_art)	Cpython 3	50 / 100	1097 ms	92520 KiB

art

import os
import sys
from io import BytesIO, IOBase
 
 
def main():
    pass

# region fastio

BUFSIZE = 8192
 
 
class FastIO(IOBase):
    newlines = 0
 
    def __init__(self, file):
        self._fd = file.fileno()
        self.buffer = BytesIO()
        self.writable = "x" in file.mode or "r" not in file.mode
        self.write = self.buffer.write if self.writable else None
 
    def read(self):
        while True:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            if not b:
                break
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines = 0
        return self.buffer.read()
 
    def readline(self):
        while self.newlines == 0:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            self.newlines = b.count(b"\n") + (not b)
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines -= 1
        return self.buffer.readline()
 
    def flush(self):
        if self.writable:
            os.write(self._fd, self.buffer.getvalue())
            self.buffer.truncate(0), self.buffer.seek(0)
 
 
class IOWrapper(IOBase):
    def __init__(self, file):
        self.buffer = FastIO(file)
        self.flush = self.buffer.flush
        self.writable = self.buffer.writable
        self.write = lambda s: self.buffer.write(s.encode("ascii"))
        self.read = lambda: self.buffer.read().decode("ascii")
        self.readline = lambda: self.buffer.readline().decode("ascii")
 

sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda: sys.stdin.readline().rstrip("\r\n")

n = int(input())
paintings = []
for i in range(n):
    paintings.append(list(map(int, input().split())))
    
paintings.sort()

curmax = -1
curmin = float("inf")
cur = 0
ans = 0

for i in range(n):
    curmax = max(curmax, paintings[i][0])
    curmin = min(curmin, paintings[i][0])
    cur += paintings[i][1]
    if cur-(curmax-curmin)<paintings[i][1]:
        curmax = paintings[i][0]
        curmin = paintings[i][0]
        cur = paintings[i][1]
    ans = max(ans, cur-(curmax-curmin))

print(ans)

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 50