import sys

## -1 参数问题
## -2 停止进水


def contron(level):
    if(level > 95):
        print("code:-2")
    elif(level > 93):
        print("level:0")
    elif(level < 10):
        print("level:5")
    elif (level < 30):
        print("level:4")
    elif (level < 50):
        print("level:3")
    elif (level < 80):
        print("level:2")
    elif (level < 93):
        print("level:1")



if __name__ == "__main__":
    if(len(sys.argv) != 2):
        print("code:-1")
    else:
        level = int(sys.argv[1])
        if(level < 0 or level > 100):
            print("code:-1")
        else:
            contron(level)