'commit'

TangDou/LanQiaoBei/ZhongGaoJi/LanQiao14STEMA202302/2.cpp

@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main() {
+    int n, m;
+    cin >> n >> m;
+    int cnt = 0;
+    for (int i = n; i <= m; i++) {
+        int x = i;
+        bool flag = false;
+        while (x) {
+            int a = x % 10;
+            if (a % 2 == 0) flag = true;
+            x /= 10;
+        }
+        if (!flag) cnt++;
+    }
+    cout << cnt << endl;
+
+    return 0;
+}