有N个旅客同乘一条船，因为严重超载，加上风高浪大，危险万分；因此船长告诉乘客，只有将全船一半的旅客投入海中，其余人才能幸免于难，无奈，大家只得同意这种办法，并议定N个人围成一圈，由第一个人数起，依次报数，数到第K人，便把他投入大海中，然后再从他的下一个人数起，数到第K人，再把他投入大海中，如此循环地进行，直到剩下N/2个乘客为止。问哪些位置是将被投入大海的位置？-There are N ride a boat with passengers because of severe overloading, coupled with high winds and big waves, extremely dangerous　therefore captain told passengers, only half of the whole ship passengers into the sea, the other person can survive, but unfortunately, we had to agree with this approach, and agreed N individuals circle, starting from the first individual number, followed by the number reported, the number to the first K who put him into the sea, and then from his next number, the number of people to K , and then he put the sea, so the cycle manner, until the rest of N/2 passengers so far. Q. What position is the position to be put in the sea?