delete pics to save space

7.3614.cpp

@@ -0,0 +1,32 @@
+#include<cstdio>
+#include<algorithm>
+#include<cassert>
+using namespace std;
+const int maxn=2505;
+struct Cow { int L,R; };
+inline bool operator<(const Cow &a,const Cow &b) { return a.L>b.L; }
+int n,m,cnt[1005],res;
+Cow cow[maxn];
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&m);
+	for(int i=0;i<n;i++) scanf("%d%d",&cow[i].L,&cow[i].R);
+	for(int i=0;i<m;i++)
+	{
+		int a,b; scanf("%d%d",&a,&b);
+		cnt[a]+=b;
+	}
+	sort(cow,cow+n);
+	for(int i=0;i<n;i++)
+		for(int j=cow[i].R;j>=cow[i].L;j--) if(cnt[j])
+		{
+			res++;
+			cnt[j]--;
+			break;
+		}
+	printf("%d\n",res);
+	return 0;
+}