1 files changed, 28 insertions, 0 deletions
diff --git a/codeforces/icpcBallons/main.cpp b/codeforces/icpcBallons/main.cpp
new file mode 100644
index 0000000..082df7c
--- /dev/null
+++ b/codeforces/icpcBallons/main.cpp
@@ -0,0 +1,28 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+	int tt;
+	cin >> tt;
+	while(tt--){
+    int n;
+    cin >> n;
+    string s;
+    cin >> s;
+    map<char, int> mp;
+    for(auto ch : s) {
+      mp[ch]++;
+    }
+    int ans = 0;
+    for(auto p : mp) {
+      if(p.second >= 2) {
+        ans += p.second - 1;
+      }
+    }
+    ans += mp.size() * 2;
+    cout << ans << endl;
+	}
+}