Solved a few problems on codechef

1 files changed, 16 insertions, 0 deletions

diff --git a/codechef/distinctPairSums.cpp b/codechef/distinctPairSums.cpp
new file mode 100644
index 0000000..5726bb4
--- /dev/null
+++ b/codechef/distinctPairSums.cpp
@@ -0,0 +1,16 @@
+#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 l, r;
+    cin >> l >> r;
+    int foo = abs(r - l) + 1;
+    cout << (l == r ? 1 : (foo * (foo + 1)) / 2) << '\n';
+  }
+}