5 条题解

  • 1
    @ 2025-12-29 15:56:13

    #include<bits/stdc++.h>

    using namespace std;

    int main() { int n; cin >> n;

    double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

    double average = 1.0*sum / n;

    cout << fixed << setprecision(2) << average << endl;

    return 0; }

    • 0
      @ 2025-12-29 15:58:35

      #include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }#include<bits/stdc++.h>

      using namespace std;

      int main() { int n; cin >> n;

      double sum = 0.0; for (int i = 0; i < n; i++) { int age; cin >> age; sum += age; }

      double average = 1.0*sum / n;

      cout << fixed << setprecision(2) << average << endl;

      return 0; }

      • 0
        @ 2025-3-26 16:23:55

        #include #include // 用于控制输出格式

        using namespace std;

        int main() { int n; cin >> n; // 读取学生人数

        double sum = 0.0; // 初始化总年龄为0
for (int i = 0; i < n; ++i) {
    int age;
    cin >> age; // 读取每个学生的年龄
    sum += age; // 累加到总年龄中
}

double average = sum / n; // 计算平均年龄
// 设置输出格式为固定小数，保留两位
cout << fixed << setprecision(2) << average << endl;

return 0;

        }

        • -1
          @ 2025-3-28 15:45:35

          #include<bits/stdc++.h> using namespace std; double sum=0.0; int n,m; int main (){ cin>>n;
          for(int i=1;i<=n;i++){ cin>>m; sum=sum+m;

          } printf("%.2lf",sum/n);

          return 0; }

          • -1
            @ 2025-3-26 16:30:12

            #include<bits/stdc++.h> using namespace std; int main() { int n,s=0,a; cin>>n; for(int i=0;i<n;++i) { cin>>a; s+=a; } cout<<fixed<<setprecision(2)<<(double)s/n; }

            • 1

            求平均年龄

            信息

            ID
            63
            时间
            1000ms
            内存
            256MiB
            难度
            5
            标签
            递交数
            358
            已通过
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