delete pics to save space

2.11020.cpp

@@ -0,0 +1,43 @@
+#include<cstdio>
+#include<set>
+using namespace std;
+struct Point
+{
+	int a,b;
+};
+inline bool operator<(const Point &a,const Point &b)
+{
+	return a.a<b.a||(a.a==b.a&&a.b<b.b);
+}
+multiset<Point> S;
+multiset<Point>::iterator it;
+int n,a,b;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	int T;
+	scanf("%d",&T);
+	for(int kase=1;kase<=T;kase++)
+	{
+		if(kase>1) printf("\n");
+		printf("Case #%d:\n",kase);
+		scanf("%d",&n);
+		S.clear();
+		while(n--)
+		{
+			scanf("%d%d",&a,&b);
+			Point P=(Point){a,b};
+			it=S.lower_bound(P);
+			if(it==S.begin()||(--it)->b>b)
+			{
+				S.insert(P);
+				it=S.upper_bound(P);
+				while(it!=S.end()&&it->b>=b) S.erase(it++);
+			}
+			printf("%d\n",S.size());
+		}
+	}
+	return 0;
+}