B - And It's Non-Zero

https://codeforces.com/contest/1615/submission/140464543

CodeForces/1615/B/B.cpp

@@ -0,0 +1,25 @@
+#include <iostream>
+
+using std::cin;
+using std::cout;
+using std::endl;
+
+int t, l, r, b[200005][32];
+
+int main() {
+    for (int i = 1; i < 200005; i++) {
+        for (int k = 0; k < 32; k++) {
+            b[i][k] = b[i - 1][k] + ((i >> k) & 1);
+        }
+    }
+    cin >> t;
+    while (t--) {
+        cin >> l >> r;
+        int max = 0;
+        for (int k = 0; k < 32; k++) {
+            max = std::max(max, b[r][k] - b[l - 1][k]);
+        }
+        cout << r - l + 1 - max << endl;
+    }
+    return 0;
+}