codeforce 660D Number of Parallelograms
题意：询问多少个矩形。统计横纵坐标差，放进vector中 1 #include<cstdio> 2 #include<cstring> 3 #include<iostream> 4 #include<queue> 5 #include<stack> 6 #include<bits/stdc++.h...
