line = list(input())
line.append("#")

state = 0
base = 10
max_len = 100
length = 0
lead_zero = False
minus = False
for char in line:
    if char == "#":
        pass
    elif state == 0:
        if char == '%':
            state = 1
        elif char == '-':
            if minus:
                state = -1
            minus = True
        elif char in '0123456789':
            length += 1
            if char == '0':
                lead_zero = True
            state = 3
        else:
            state = -1
    elif state == 1:
        if char == "0":
            state = 2
        else:
            state = -1
    elif state == 2:
        if char == 'x':
            state = 3
            max_len = base = 16
        elif char == 'o':
            state = 3
            max_len = base = 8
        elif char == 'b':
            state = 3
            max_len = 20
            base = 2
        else:
            state = -1
    elif state == 3:
        if char == ".":
            state = 4
            continue
        if char == "E":
            state = 5
            continue
        if base == 10:
            if char in '0123456789':
                if lead_zero:
                    state = -1
                lead_zero = False
                length += 1
            else:
                state = -1
        elif base == 2:
            if char in '01':
                length += 1
            else:
                state = -1
        elif base == 8:
            if char in '01234567':
                length += 1
            else:
                state = -1
        elif base == 16:
            if char in '0123456789abcdef':
                length += 1
            else:
                state = -1
        if length > max_len:
            state = -1
    elif state == 4:
        if char != "0":
            if char == "%":
                state = 1
                base = 10
                max_len = 100
                length = 0
            elif char in "123456789":
                state = 3
                base = 10
                max_len = 100
                length = 1
            else:
                state = -1
    elif state == 5:
        if char == "+" or char == "-":
            minus = True
            state = 0
            base = 10
            max_len = 100
            length = 0
        else:
            state = -1
    if state == -1:
        print("NO")
        break
else:
    if length != 0:
        print("YES")
    else:
        print("NO")