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Submission #835817

# Submission time Handle Problem Language Result Execution time Memory
835817 2023-08-23T20:57:32 Z iamjiamingliu Mobile (BOI12_mobile) PyPy 3
0 / 100
 899 ms 131072 KB 
import sys
import math

towers_cnt, line_len = map(int, sys.stdin.readline().strip().split())
towers = [tuple(map(int, sys.stdin.readline().strip().split())) for _ in range(towers_cnt)]

def can_cover_whole_line(radius: float) -> bool:
    total_dist = 0
    for x, height in towers:
        if height > radius:     continue
        dist = math.sqrt(radius ** 2 - height ** 2)
        if x - dist <= total_dist <= x + dist:
            total_dist = x + dist
    return total_dist >= line_len

l, r = 0, 2 * 10 ** 9
while not math.isclose(l, r):
    mid = (l + r) / 2
    if can_cover_whole_line(radius=mid):
        r = mid
    else:
        l = mid

print(l)

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 49 ms 20392 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 54 ms 20904 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 65 ms 21884 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 63 ms 21732 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 66 ms 21692 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 20900 KB Output is correct
2 Incorrect 49 ms 20520 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 126 ms 27816 KB Output is correct
2 Incorrect 119 ms 27696 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 114 ms 28332 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 28360 KB Output is correct
2 Incorrect 117 ms 28788 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 126 ms 30376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 136 ms 30120 KB Output is correct
2 Incorrect 130 ms 30684 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 440 ms 71404 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 465 ms 75992 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 559 ms 80844 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 568 ms 86492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 598 ms 93100 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 684 ms 98928 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 668 ms 101992 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 779 ms 109164 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 899 ms 122668 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 877 ms 131072 KB Output isn't correct
2 Halted 0 ms 0 KB -