delete pics to save space

1.3845.cpp

@@ -0,0 +1,32 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+const int oo=0x3f3f3f3f;
+const int maxn=1005;
+struct Node { int a,b; };
+inline bool operator<(const Node &a,const Node &b) { return a.a<b.a||(a.a==b.a&&a.b<b.b); }
+int T,n,dp[maxn];
+Node p[maxn];
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d",&T);
+	while(T-->0)
+	{
+		scanf("%d",&n);
+		for(int i=0;i<n;i++)
+		{
+			int x,y; scanf("%d-%d",&x,&y);
+			p[i].a=min(x,y);
+			p[i].b=max(x,y);
+		}
+		sort(p,p+n);
+		memset(dp,oo,sizeof(dp));
+		for(int i=n-1;i>=0;i--) *lower_bound(dp,dp+n+1,p[i].b)=p[i].b;
+		printf("%d\n",lower_bound(dp,dp+n+1,oo)-dp);
+	}
+	return 0;
+}