From f9ca8b092bd8c33db53578e9745cc0680077108d Mon Sep 17 00:00:00 2001
From: Anshika Gupta <anshika@an.anshika.gupta@gmail.com>
Date: Wed, 30 Oct 2019 13:35:09 +0530
Subject: [PATCH] Added cf round 75(eduactional) solns

---
 1251A.cpp | 26 ++++++++++++++++++++++++++
 1251B.cpp | 29 +++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 1251A.cpp
 create mode 100644 1251B.cpp

diff --git a/1251A.cpp b/1251A.cpp
new file mode 100644
index 0000000..9991283
--- /dev/null
+++ b/1251A.cpp
@@ -0,0 +1,26 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t; cin >> t;
+    while(t--){
+        string s; cin >> s;
+        unordered_set<char>st;
+        for (int i = 0; i < s.length(); i++)
+        {
+            if(s[i] != s[i+1]){
+                st.insert(s[i]);
+            }else{
+                i++;
+            }
+        }
+        vector<char>v;
+        for(auto i : st){
+            v.push_back(i);
+        }
+        sort(v.begin(), v.end());
+        for(auto i = v.begin(); i != v.end(); i++){
+            cout << *i;
+        }
+        cout << endl;
+    }
+}
\ No newline at end of file
diff --git a/1251B.cpp b/1251B.cpp
new file mode 100644
index 0000000..49d9e37
--- /dev/null
+++ b/1251B.cpp
@@ -0,0 +1,29 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+    int t; cin >> t;
+    while(t--){
+        int n; cin >> n;
+        vector<string>v(n);
+        for(int i = 0; i < n; i++){
+            cin >> v[i];
+        }
+        int odd = 0;int zero = 0, one = 0;
+        for(auto i: v){
+            
+            for(auto j: i){
+                if(j == '0')zero ^= 1;
+                if(j == '1')one ^= 1;
+            }
+            if(i.length()%2){
+                odd = 1;
+            }
+        }
+        if(!odd && zero){
+            cout << n-1 << endl;
+        }
+        else{
+            cout << n << endl;
+        }
+    }
+}
\ No newline at end of file