'commit'

RuMenJingDian/LiTi/P_2_4.cpp

@@ -0,0 +1,22 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    ios::sync_with_stdio(false); //读入输出优化的强迫症
+    int n, m;
+    int num = 0;
+    //设置输出为小数点后5位
+    cout << fixed << setprecision(5);
+    while (true) {
+        cin >> n >> m;
+        num++;
+        if (n == 0 && m == 0) break;
+        double sum = 0.0;
+        for (int i = n; i <= m; i++) {
+            sum += 1 / pow(i, 2);
+        }
+        cout << "Case "<<num<<":"<<sum << endl;
+    }
+    return 0;
+}