Submission #3811756

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Source Code Expand

N = int(input())
obj = [tuple(map(int, input().split())) for _ in range(N)]
if len(set(map(lambda x: (x[0]+x[1])%2, obj))) > 1:
    print(-1)
    exit()
m = 40
if (obj[0][0]+obj[0][1]) % 2 == 1:
    m = 39
print(m)
for x, y in obj:
    if x > 0:
        print("R"*x, end="")
    else:
        print("L"*-x, end="")
    if y > 0:
        print("U"*y, end="")
    else:
        print("D"*-y, end="")
    print("L"*((m-abs(x)-abs(y))//2), end="")
    print("R"*((m-abs(x)-abs(y))//2))

Submission Info

Judge Result