SPOJ IITWPC4F - Gopu and the Grid Problem [线段树]【数据结构】
题目链接:http://www.spoj.com/problems/IITWPC4F/ ————————————————————————————-. IITWPC4F - Gopu and the Grid Problem no tags Gopu is interested in the integer co-ordinates of the X-Y plane (0<=x,y<=100000)