例如dis(0, 1)=3, dis(-2, -1)=9
给出整点坐标(X, Y),你能计算出dis(X, Y)吗?
0 1
3
2018年真题精选
2194,2276,2277,2279,2280,2281,2282,2283,2284,2285,2286,2287,
2288,2291,2292,2294,2296