Added 1872B - The Corridor or There and Back Again.cpp

Author: vikashpatel24

1872B - The Corridor or There and Back Again.cpp

@@ -0,0 +1,41 @@
+//                                 ॐ नमः शिवाय
+#include<bits/stdc++.h>
+using namespace std;
+
+#define ll long long
+#define pb push_back
+#define ff first
+#define ss second
+#define mp make_pair
+ 
+// Code Written By: Vikash Patel
+// Codeforces Profile: https://codeforces.com/profile/vikashpatel
+
+int main()
+{
+    ios_base::sync_with_stdio(0);
+    cin.tie(0);
+    cout.tie(0);
+    
+    // #ifndef ONLINE_JUDGE
+    // freopen("input.txt", "r", stdin);
+    // freopen("/Users/vikash/Desktop/output.txt", "w", stdout);
+    // #endif
+    
+    int t;
+    cin>>t;
+    while(t--)
+    {
+        int n;
+        cin>>n;
+        int ans = INT_MAX;
+        while(n--)
+        {
+            int d, s;
+            cin>>d>>s;
+            ans = min(ans, d+(s-1)/2);
+        }
+        cout<<ans<<endl;
+    }
+    return 0;
+}