##python
def countingValleys(steps, path):
    up = 0
    down = 0
    valley = 0
    for i in range(steps):
        if path[i]=='U':
            up +=1
        elif path[i] =='D':
            down +=1
        if (up == down and path[i]=='U'):
            valley +=1
    return valley