codeforces round 674 div 3 question A,B,C solution added

Author: astromanish

Codeforces_Contests/7_Round_674_Div_3/A.cpp

@@ -0,0 +1,28 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main()
+{
+    int t, n, x, f;
+    cin >> t;
+    while (t--)
+    {
+        cin >> n >> x;
+        if (n == 1 || n == 2)
+            f = 1;
+        else
+        {
+            for (int i = 2, j = 2;; i += x, j++)
+            {
+                if (n > i && n <= i + x)
+                {
+                    f = j;
+                    break;
+                }
+            }
+        }
+        cout << f << "\n";
+    }
+    return 0;
+}

Codeforces_Contests/7_Round_674_Div_3/B.cpp

@@ -0,0 +1,32 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main()
+{
+    int t, n, m;
+    cin >> t;
+    string s = "NO";
+    while (t--)
+    {
+        cin >> n >> m;
+        int count = 0;
+        int a, b, c, d;
+        for (int i = 0; i < n; i++)
+        {
+            cin >> a >> b;
+            cin >> c >> d;
+            if (b == c)
+                count++;
+        }
+        if (count > 0 && m % 2 == 0)
+            s = "YES";
+        else
+        {
+            s = "NO";
+        }
+
+        cout << s << "\n";
+    }
+    return 0;
+}

Codeforces_Contests/7_Round_674_Div_3/C.cpp

@@ -0,0 +1,23 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main()
+{
+    int t, n, rn;
+    cin >> t;
+    while (t--)
+    {
+        cin >> n;
+        int rn = sqrt(n);
+        if (n % rn == 0)
+        {
+            cout << (n / rn) + rn - 2 << "\n";
+        }
+        else
+        {
+            cout << (n / rn) + rn - 1 << "\n";
+        }
+    }
+    return 0;
+}