SPFA (共7题)
ID Problem Title Source AC Ratio Solved Tries
1662 Easy sssp vijos 33% 1 12
2549 Bicriterial routing 双调路径 BOI2002 100% 1 1
2869 虫洞 Wormholes USACO 2006 Dec Gold 100% 4 4
3148 Roads and Planes 道路和航线 USACO 2011 Jan Gold 75% 1 4
3525 Sightseeing Cows 奶牛的旅行 USACO 2007 Dec Gold 100% 2 2
4291 Word Rings CERC 2005 0% 0 0
4292 最小圈 HNOI 2009 100% 1 1