Done

808.cxx

@@ -0,0 +1,43 @@
+/*
+ * 69.cxx
+ *
+ * Copyright 2019 hp <hp@hp-HP-ProBook-4530s>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ *
+ */
+
+
+#include <bits/stdc++.h>
+using namespace std;
+
+int main()
+{	long long int n,i,temp,s=0,temp1,temp2,a=0,b=0;
+	cin >> n;
+	for(i=0;i<n;i++){
+		cin >> temp >> temp1 >> temp2;
+		s=s+temp;
+		a=a+temp1;
+		b=b+temp2;
+	}
+	if(s==0 && a==0 && b==0)
+		cout << "YES";
+	else
+		cout << "NO";
+
+	return 0;
+}