Buggy python submission (verdict: Runtime Error):
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0] - 1] += 1
        counts[path[1] - 1] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


s1, s2, s3 = input().split('\n')
path1 = [int(s) for s in s1.split(' ')]
path2 = [int(s) for s in s2.split(' ')]
path3 = [int(s) for s in s3.split(' ')]

print(solution(path1, path2, path3))


Fixed submission:
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0] - 1] += 1
        counts[path[1] - 1] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


path1 = [int(s) for s in input().split(' ')]
path2 = [int(s) for s in input().split(' ')]
path3 = [int(s) for s in input().split(' ')]

print(solution(path1, path2, path3))

Buggy python submission (verdict: Runtime Error):
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0] - 1] += 1
        counts[path[1] - 1] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


if __name__ == "__main__":
    s1, s2, s3 = input().split('\n')
    path1 = [int(s) for s in s1.split(' ')]
    path2 = [int(s) for s in s2.split(' ')]
    path3 = [int(s) for s in s3.split(' ')]

    print(solution(path1, path2, path3))


Fixed submission:
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0] - 1] += 1
        counts[path[1] - 1] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


path1 = [int(s) for s in input().split(' ')]
path2 = [int(s) for s in input().split(' ')]
path3 = [int(s) for s in input().split(' ')]

print(solution(path1, path2, path3))

Buggy python submission (verdict: Runtime Error):
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0]] += 1
        counts[path[1]] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


s1, s2, s3 = input().split('\n')
path1 = [int(s) for s in s1.split(' ')]
path2 = [int(s) for s in s2.split(' ')]
path3 = [int(s) for s in s3.split(' ')]

print(solution(path1, path2, path3))


Fixed submission:
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0] - 1] += 1
        counts[path[1] - 1] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


path1 = [int(s) for s in input().split(' ')]
path2 = [int(s) for s in input().split(' ')]
path3 = [int(s) for s in input().split(' ')]

print(solution(path1, path2, path3))

Buggy python submission (verdict: Runtime Error):
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0]] += 1
        counts[path[1]] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


path1 = [int(s) for s in input().split(' ')]
path2 = [int(s) for s in input().split(' ')]
path3 = [int(s) for s in input().split(' ')]

print(solution(path1, path2, path3))


Fixed submission:
def solution(path1, path2, path3):
    counts = [0, 0, 0, 0]
    paths = [path1, path2, path3]
    for path in paths:
        counts[path[0] - 1] += 1
        counts[path[1] - 1] += 1

    countsOfCounts = [0, 0]
    for count in counts:
        if count == 1:
            if countsOfCounts[0] == 2:
                return "NO"
            countsOfCounts[0] += 1
        elif count == 2:
            if countsOfCounts[1] == 2:
                return "NO"
            countsOfCounts[1] += 1
        else:
            return "NO"
    return "YES"


path1 = [int(s) for s in input().split(' ')]
path2 = [int(s) for s in input().split(' ')]
path3 = [int(s) for s in input().split(' ')]

print(solution(path1, path2, path3))