delete pics to save space

2.1152.cpp

@@ -0,0 +1,32 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+int n;
+int a[4005],b[4005],c[4005],d[4005];
+int tmp[4000*4000+1],cnt;
+void solve()
+{
+	int i,j;
+	for(i=0;i<n;++i)
+		for(j=0;j<n;++j) tmp[cnt++]=a[i]+b[j];
+	sort(tmp,tmp+cnt);
+	long long res=0;
+	for(i=0;i<n;++i)
+		for(j=0;j<n;++j)
+			res+=upper_bound(tmp,tmp+cnt,-c[i]-d[j])-lower_bound(tmp,tmp+cnt,-c[i]-d[j]);
+	printf("%lld\n",res);
+}
+int main()
+{
+	int t;
+	scanf("%d",&t);
+	while(t-->0)
+	{
+		cnt=0;
+		scanf("%d",&n);
+		for(int i=0;i<n;i++) scanf("%d%d%d%d",a+i,b+i,c+i,d+i);
+		solve();
+		if(t) printf("\n");
+	}
+	return 0;
+}