Solve problems 014A and 014B from AtCoder

Author: AliOsm

AtCoder/014A - Cookie Exchanges.cpp

@@ -0,0 +1,31 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+  int a, b, c;
+  cin >> a >> b >> c;
+
+  int res = 0, lol = 1;
+  while(a % 2 == 0 && b % 2 == 0 && c % 2 == 0) {
+    if(lol == 1e6 + 1) {
+      cout << -1 << endl;
+      return 0;
+    }
+
+    int tmpa = a / 2;
+    int tmpb = b / 2;
+    int tmpc = c / 2;
+
+    a = tmpb + tmpc;
+    b = tmpa + tmpc;
+    c = tmpa + tmpb;
+
+    res++;
+    lol++;
+  }
+
+  cout << res << endl;
+
+  return 0;
+}

AtCoder/014B - Unplanned Queries.cpp

@@ -0,0 +1,28 @@
+#include <iostream>
+
+using namespace std;
+
+int const N = 1e5 + 1;
+int freq[N];
+
+int main() {
+  int n, m;
+  cin >> n >> m;
+
+  int a, b;
+  for(int i = 0; i < m; ++i) {
+    cin >> a >> b;
+    ++freq[--a];
+    ++freq[--b];
+  }
+
+  for(int i = 0; i < n; ++i)
+    if(freq[i] % 2 != 0) {
+      cout << "NO" << endl;
+      return 0;
+    }
+
+  cout << "YES" << endl;
+
+  return 0;
+}

AtCoder/README.md

@@ -12,3 +12,5 @@
 - [060B - Choose Integers](http://abc060.contest.atcoder.jp/tasks/abc060_b)
 - [060C - Sentou](http://abc060.contest.atcoder.jp/tasks/arc073_a)
 - [060D - Simple Knapsack](http://abc060.contest.atcoder.jp/tasks/arc073_b)
+- [014A - Cookie Exchanges](http://agc014.contest.atcoder.jp/tasks/agc014_a)
+- [014B - Unplanned Queries](http://agc014.contest.atcoder.jp/tasks/agc014_b)