1 files changed, 30 insertions, 0 deletions
diff --git a/21-04-2022(Div.4)/B.cpp b/21-04-2022(Div.4)/B.cpp
new file mode 100644
index 0000000..d1b3e98
--- /dev/null
+++ b/21-04-2022(Div.4)/B.cpp
@@ -0,0 +1,30 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+auto solve(map<int, int> m){
+  for(auto x : m){
+    if(x.second >= 3){
+      return x.first;
+    }
+  }
+  return -1;
+}
+
+int main(){
+  int tt, x, n;
+  cin >> tt;
+  while(tt--){
+    map<int, int> frq;
+    vector<int> v;
+    cin >> n;
+    for(int i = 0; i < n; i++){
+      cin >> x;
+      frq[x]++;
+    }
+    // for(auto &x : frq){
+    //   v.push_back(x.second);
+    // }
+    cout << solve(frq) << endl;
+  }
+}