1972B - Coin Games - CodeForces Solution

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Python Code: 

t = int(input())

for tc in range(0, t):
    n = int(input())
    str = input()
    ucnt = 0
    for ch in str:
        if ch == 'U':
            ucnt = ucnt + 1
        
    print( "YES" if (ucnt & 1) else "NO")


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