摘要：
1750. Pakhom and the GullyTime Limit: 1.0 secondMemory Limit: 64 MBPakhom stands at the point S and wants to reach the point T to buy the land there. But he noticed a gully, which represents a polyline ABC. What is the length of the shortest path Pakhom should walk if he doesn't want to fall int 阅读全文