답안 #492214

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
492214	2021-12-06T01:08:43 Z	ntarsis	Mobile (BOI12_mobile)	PyPy 3	100 / 100	789 ms	94948 KB

mobile

from math import sqrt
import sys
n,l = map(int,input().split())
nums = []
for i in range(n):
	a,b = sys.stdin.readline().split()
	a = int(a)
	b = int(b)
	nums.append((a,b))
lo = 0
hi = 500000000
def check(x):
	intervals = []
	curr = 0
	for i in nums:
		a,b = i[0],i[1]
		bruh = (x-b)*(x+b)
		if bruh>=0:
			c = sqrt(bruh)
			part1 = a-c
			part2 = a+c
			if part1 <= curr and part2 > curr:
				curr = part2
				if curr>=l:
					return True
	return False
while hi - lo > 0.001:
	mid = (hi+lo)/2
	if check(mid):
		hi = mid
	else:
		lo = mid
sys.stdout.write(str(lo)+"\n")

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	32 ms	18168 KB	Output is correct
2	Correct	33 ms	18200 KB	Output is correct
3	Correct	34 ms	18224 KB	Output is correct
4	Correct	33 ms	18216 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	18848 KB	Output is correct
2	Correct	39 ms	19036 KB	Output is correct
3	Correct	52 ms	18848 KB	Output is correct
4	Correct	42 ms	18928 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	56 ms	20032 KB	Output is correct
2	Correct	51 ms	19604 KB	Output is correct
3	Correct	53 ms	19796 KB	Output is correct
4	Correct	51 ms	19740 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	56 ms	20492 KB	Output is correct
2	Correct	50 ms	19956 KB	Output is correct
3	Correct	60 ms	20092 KB	Output is correct
4	Correct	71 ms	20216 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	70 ms	20292 KB	Output is correct
2	Correct	49 ms	19956 KB	Output is correct
3	Correct	57 ms	20060 KB	Output is correct
4	Correct	57 ms	20268 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	68 ms	20332 KB	Output is correct
2	Correct	49 ms	19940 KB	Output is correct
3	Correct	53 ms	20032 KB	Output is correct
4	Correct	58 ms	20128 KB	Output is correct
5	Correct	67 ms	20468 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	103 ms	26832 KB	Output is correct
2	Correct	81 ms	27168 KB	Output is correct
3	Correct	76 ms	25520 KB	Output is correct
4	Correct	95 ms	27296 KB	Output is correct
5	Correct	75 ms	24712 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	91 ms	26672 KB	Output is correct
2	Correct	88 ms	26844 KB	Output is correct
3	Correct	95 ms	27156 KB	Output is correct
4	Correct	135 ms	27344 KB	Output is correct
5	Correct	97 ms	27484 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	85 ms	26744 KB	Output is correct
2	Correct	80 ms	27164 KB	Output is correct
3	Correct	96 ms	27076 KB	Output is correct
4	Correct	111 ms	28084 KB	Output is correct
5	Correct	92 ms	26976 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	99 ms	27612 KB	Output is correct
2	Correct	92 ms	27448 KB	Output is correct
3	Correct	101 ms	26976 KB	Output is correct
4	Correct	123 ms	28220 KB	Output is correct
5	Correct	115 ms	27308 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	124 ms	27488 KB	Output is correct
2	Correct	97 ms	27416 KB	Output is correct
3	Correct	104 ms	26960 KB	Output is correct
4	Correct	119 ms	28820 KB	Output is correct
5	Correct	101 ms	27328 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	314 ms	51288 KB	Output is correct
2	Correct	314 ms	54536 KB	Output is correct
3	Correct	277 ms	54032 KB	Output is correct
4	Correct	372 ms	56464 KB	Output is correct
5	Correct	316 ms	53560 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	354 ms	55176 KB	Output is correct
2	Correct	474 ms	53632 KB	Output is correct
3	Correct	359 ms	52756 KB	Output is correct
4	Correct	345 ms	56056 KB	Output is correct
5	Correct	320 ms	54172 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	371 ms	55660 KB	Output is correct
2	Correct	398 ms	59804 KB	Output is correct
3	Correct	314 ms	59352 KB	Output is correct
4	Correct	405 ms	62916 KB	Output is correct
5	Correct	357 ms	58648 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	390 ms	60000 KB	Output is correct
2	Correct	520 ms	58380 KB	Output is correct
3	Correct	367 ms	57404 KB	Output is correct
4	Correct	407 ms	62948 KB	Output is correct
5	Correct	387 ms	59308 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	435 ms	65068 KB	Output is correct
2	Correct	404 ms	69792 KB	Output is correct
3	Correct	392 ms	69116 KB	Output is correct
4	Correct	465 ms	72296 KB	Output is correct
5	Correct	421 ms	68020 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	440 ms	70456 KB	Output is correct
2	Correct	580 ms	68232 KB	Output is correct
3	Correct	457 ms	67328 KB	Output is correct
4	Correct	493 ms	72400 KB	Output is correct
5	Correct	426 ms	69088 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	493 ms	68856 KB	Output is correct
2	Correct	496 ms	74404 KB	Output is correct
3	Correct	414 ms	73536 KB	Output is correct
4	Correct	532 ms	78336 KB	Output is correct
5	Correct	469 ms	73192 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	505 ms	75420 KB	Output is correct
2	Correct	659 ms	73088 KB	Output is correct
3	Correct	449 ms	71888 KB	Output is correct
4	Correct	516 ms	77964 KB	Output is correct
5	Correct	486 ms	74244 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	581 ms	84628 KB	Output is correct
2	Correct	512 ms	91332 KB	Output is correct
3	Correct	574 ms	90456 KB	Output is correct
4	Correct	646 ms	94884 KB	Output is correct
5	Correct	559 ms	89344 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	620 ms	92192 KB	Output is correct
2	Correct	789 ms	89104 KB	Output is correct
3	Correct	598 ms	88352 KB	Output is correct
4	Correct	653 ms	94948 KB	Output is correct
5	Correct	576 ms	90536 KB	Output is correct

답안 #492214

Compilation message