The Dominant Color

def solve(mn, rows_data):
    m, n = map(int, str(mn).split())
    from collections import Counter
    cnt = Counter()
    for row in str(rows_data).strip().split(','):
        for v in row.split():
            cnt[int(v)] += 1
    half = m * n // 2
    for color, c in cnt.items():
        if c > half:
            print(color)
            return