给定了n和k个加油站的位置，汽车加满油后可行驶n公里，指出应在哪些加油站停靠，使得加油次数最少，贪心选择算法-Can travel to the location given n and k gas stations, auto fill up n kilometers that should be docked in which gas stations, making refueling the least number of greedy selection algorithm