Submission #3917065

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def warshall_floyd(v_count: int, matrix: list) -> list:
    """ ワーシャルフロイド
    :param v_count: 頂点数
    :param matrix: 隣接行列(到達不能はfloat("inf"))
    """
    # 到達不能をfloat("inf")にしておけば余計なチェックを入れなくても
    # inf > inf+(-1) のような到達不能+負辺が繋がってしまうことはない
    for k in range(v_count):
        for i in range(v_count):
            for j in range(v_count):
                if matrix[i][j] > matrix[i][k]+matrix[k][j]:
                    matrix[i][j] = matrix[i][k]+matrix[k][j]
    return matrix


if __name__ == "__main__":
    import sys
    N, M = map(int, input().split())

    inf = float("inf")
    matrix = [[inf]*N for _ in [0]*N]
    for i in range(N):
        matrix[i][i] = 0

    for a, b, t in (map(int, l.split()) for l in sys.stdin):
        matrix[a-1][b-1] = matrix[b-1][a-1] = t

    matrix = warshall_floyd(N, matrix)

    print(min(max(row) for row in matrix))

Submission Info

Submission Time
Task D - バスと避けられない運命
User htkb
Language Python3 (3.4.3)
Score 0
Code Size 1031 Byte
Status

Test Cases

Set Name Score / Max Score Test Cases
All 0 / 100 sample_01.txt, sample_02.txt, sample_03.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt
Case Name Status Exec Time Memory
sample_01.txt 18 ms 3064 KB
sample_02.txt 18 ms 3064 KB
sample_03.txt 18 ms 3064 KB
test_01.txt 18 ms 3064 KB
test_02.txt
test_03.txt
test_04.txt 1803 ms 4628 KB
test_05.txt 1500 ms 3940 KB
test_06.txt 150 ms 3188 KB
test_07.txt 3749 ms 4808 KB
test_08.txt 24 ms 3064 KB
test_09.txt 1027 ms 3692 KB
test_10.txt 123 ms 3188 KB
test_11.txt 144 ms 3188 KB
test_12.txt 2661 ms 4956 KB
test_13.txt 154 ms 3188 KB
test_14.txt 232 ms 3188 KB
test_15.txt 3403 ms 4692 KB
test_16.txt 267 ms 3316 KB
test_17.txt 1160 ms 3852 KB
test_18.txt 2407 ms 4796 KB
test_19.txt 297 ms 3316 KB
test_20.txt 244 ms 3188 KB
test_21.txt 18 ms 3064 KB
test_22.txt 812 ms 3784 KB
test_23.txt 20 ms 3064 KB
test_24.txt
test_25.txt
test_26.txt 1146 ms 4188 KB
test_27.txt 1545 ms 4568 KB
test_28.txt
test_29.txt
test_30.txt 232 ms 3312 KB
test_31.txt 32 ms 3064 KB
test_32.txt
test_33.txt
test_34.txt 86 ms 3188 KB
test_35.txt 900 ms 4068 KB
test_36.txt