# coding: utf-8
def II(): return int(input())
def ILI(): return list(map(int, input().split()))


def read():
    N = II()
    return (N, )


def solve(N):
    ans = N * 10
    return ans


def main():
    params = read()
    print(solve(*params))


if __name__ == "__main__":
    main()