38 条题解

  • 1
    @ 2025-12-7 18:31:47
    #include <iostream>
    #include <iomanip>
    using namespace std;
    int main()
    {
    	short n;
    	cin >> n;
    	double num[n],sum;
    	for (short i = 0;i < n;i++)
    		cin >> num[i];
    	for (short i = 0;i < n;i++)
    		sum += num[i];
    	cout << fixed << setprecision(4) << sum / n;
    	return 0;
    }
    • 1
      @ 2025-8-18 11:18:29

      #include<bits/stdc++.h> using namespace std; int main () {

      int n;
      double x,sum;
      cin>>n;
      for(int i=1 ;  i <= n ; i++ ) {
          cin >> x;
          sum+=x;
      }
      cout<<fixed<<setprecision(4)<<sum/n;
      return 0;
      

      }

      • 1
        @ 2025-3-5 18:02:38

        这题和python有半毛钱关系吗?

        #include <stdio.h>
        #include <iostream>
        #include<iomanip>
        #include <math.h>
        using namespace std;
        int main()
        {
        	int a;
        	float b[100],c;
        	cin>>a;
        	for(int i=1;i<=a;i++){
        	cin>>b[i];
        	}
        	for(int i=1;i<=a;i++){
        	c+=b[i];
        	}
        	cout<<fixed<<setprecision(4)<<c/a;
            return 0;
        }
        
        • 0
          @ 2025-12-14 16:14:22

          #include<bits/stdc++.h> using namespace std;

          int main() { int n; double a,sum=0; cin>>n; for(int i=1;i<=n;i=i+1) { cin>>a; sum=sum+a;

          }
          cout<<fixed<<setprecision(4);
          cout<<sum/n;
          return 0;
          

          }

          • 0
            @ 2025-12-14 16:13:58

            #include<bits/stdc++.h> using namespace std;

            int main() { int n; double a,sum=0; cin>>n; for(int i=1;i<=n;i=i+1) { cin>>a; sum=sum+a;

            }
            cout<<fixed<<setprecision(4);
            cout<<sum/n;
            return 0;
            

            }

            • 0
              @ 2025-12-13 22:15:08
              #include<cstdio>
              #include<cctype>
              #include<string.h>
              #include<math.h>
              #include<cmath>
              #include<algorithm>
              using namespace std;
              double a[1000],cnt=0;
              int main()
              {
              	int n;
              	cin>>n;
              	for(int i=1;i<=n;i++)
              	{
              		cin>>a[i];	
              		cnt+=a[i];
              	} 
              	printf("%.4lf",cnt/n);
              	return 0;
              }
              
              
              
              • 0
                @ 2025-8-18 11:45:51

                #include #include #include using namespace std; int main() { int n; double x,sum; cin>>n; for(int i=1;i<=n;i++) { cin>>x; sum+=x; } cout<<fixed<<setprecision(4)<<sum/n; return 0; }

                • 0
                  @ 2025-5-18 15:46:17
                  #include <bits/stdc++.h>
                  
                  using namespace std;
                  
                  int main(){
                  	double n,a,b;
                  	cin>>n;
                  	for(int i = 1;i<=n;i++){
                  		cin>>a;
                  		b+=a;
                  	}
                  	printf("%.4lf",b/n);
                  	return 0;
                  }
                  
                  • 0
                    @ 2024-6-13 14:12:02

                    #include<bits/stdc++.h>//万能头 #include<iostream//cin,cout #include<iomanip 》//cout<<fixed<<setprecision(n){位数保留} #include<cmath》//函数 /#include<math.h>/ #include<cstdio》//scanf,printf //#include<stdio.h> int a,sum=0,ans=0,num=0; long long b; float c; char d; bool e; double f; long double g,k; short h; long j; using namespace std; int main() { cin>>a>>b>>c>>d>>e>>f>>g>>h>>j; //scanf("%d,%ll,%f,%c,%b,%do,%ld,%s,%l",&a,&b,&c,&d,&e,&f,&g,&h,&j); if (a+b+c+d+e+f+g+h+j==/<,>,<=,>=/k){int p; for(int i;i<=num;i--){sum=sum+ans++; } cout<<p; /printf("%d\n",p);/} return 0; } 防伪标识://dongliyang6666666666666666666skhjkfgjgkjhfgjDV //没有工具包 谁敢抄???????????

                    • 0
                      @ 2024-6-12 20:20:32

                      #include #include using namespace std; int main(){ double n,m,x; cin>>n; for(int i=1;i<=n;i++){ cin>>m; x+=m; } cout<<fixed<<setprecision(4); cout<<x/n<<endl; return 0; }

                      • @ 2024-6-13 14:07:44

                        我把你的抄了,你信吗????????????

                    • 0
                      @ 2024-6-12 20:19:00

                      #include #include using namespace std; int main() { int n double a,b =0 cin>>n for(int i =1;i<=n;i++) { cin>>a b= b + a } cout<<fixed<<setpeciion(4)<<b/n return 0; } 不 要 抄!!!!!!!!!! 肯 定 会 错!

                      • @ 2024-6-13 14:07:50

                        我把你的抄了,你信吗????????????

                    • 0
                      @ 2024-6-12 19:57:19
                      #include<iostream>
                      #include<iomanip>
                      using namespace std;
                      int main()
                      {
                      	long long n;
                      	double sum=0;
                      	cin>>n;
                      	for(int i=1;i<=n;i++)
                      	{
                      		double t;
                      		cin>>t;
                      		sum=sum+t;
                      	}
                      	cout<<fixed<<setprecision(4)<<sum/n;
                      }
                      
                      • @ 2024-6-13 14:07:34

                        我把你的抄了,你信吗????????????

                    • 0
                      @ 2024-6-1 19:20:45
                      #include<iostream>
                      #include<iomanip>
                      using namespace std;
                      int main(){
                      	double a,b,c;
                      	cin>>a;
                      	for(int i=1;i<=a;i++)
                      	{
                      		cin>>b;
                      		c+=b;
                      	}
                      	cout<<fixed<<setprecision(4)<<c/a<<endl;
                      }
                      //钟鼎皓👾
                      

                      🆘

                      • 0
                        @ 2024-5-19 20:18:14
                        #include<iostream>
                        #include<iomanip>
                        using namespace std;
                        int main(){
                        	double a,b,c;
                        	cin>>a;
                        	for(int i=1;i<=a;i++)
                        	{
                        		cin>>b;
                        		c+=b;
                        	}
                        	cout<<fixed<<setprecision(4)<<c/a<<endl;
                        }
                        
                        • 0
                          @ 2024-4-6 17:09:14

                          #include

                          using namespace std;

                          int main(){

                          int n;

                          cin>>n;

                          double t;

                          double num=0;

                          for(int i=1;i<=n;i++){

                          cin>>t;

                          num+=t;

                          } double y=num/n;

                          printf("%.4lf",y);

                          } //比水门还水的题

                          • -1
                            @ 2024-6-12 20:06:45
                            #include<cstdio>
                            #include<cstdlib>
                            #include<cmath>
                            #include<cctype>
                            #include<cstring>
                            #include<string>
                            #include<vector>
                            #include<set>
                            #include<stack>
                            #include<queue>
                            #include<iostream>
                            #include<iomanip>
                            #include<ctime>
                            #include<algorithm>
                            #include<map>
                            // const int MAXN=1e5;
                            // double sz[MAXN];
                            using namespace std;
                            
                            int main(){
                                int a;
                                double ans;
                                scanf("%d",&a);
                                for(int i=1;i<=a;i++){
                                    double in;
                                    scanf("%lf",&in);
                                    ans+=in;
                                }
                                double out=ans/a;
                                printf("%.4f",out);
                            }
                            
                            • @ 2024-6-13 14:07:19

                              我把你的抄了,你信吗????????????

                            • @ 2025-5-16 13:22:23

                              3~4~^7^

                          • -1
                            @ 2023-11-19 15:20:42

                            #include <bits/stdc++.h> using namespace std; int main() { cout << "I don't know!"; return 0; }

                            • -1
                              @ 2023-8-22 20:41:08

                              #include #include using namespace std; int main(){ double a,b,c; cin>>a; for(int i=1;i<=a;i++) { cin>>b; c+=b; } cout<<fixed<<setprecision(4)<<c/a<<endl; }

                              • -1
                                @ 2023-3-22 20:22:04
                                #include<iostream>
                                #include<iomanip>
                                using namespace std;
                                int main(){
                                	double a,b,c;
                                	cin>>a;
                                	for(int i=1;i<=a;i++)
                                	{
                                		cin>>b;
                                		c+=b;
                                	}
                                	cout<<fixed<<setprecision(4)<<c/a<<endl;
                                }
                                
                                • -1
                                  @ 2023-3-22 20:21:59
                                  #include<iostream>
                                  #include<iomanip>
                                  using namespace std;
                                  int main(){
                                  	double a,b,c;
                                  	cin>>a;
                                  	for(int i=1;i<=a;i++)
                                  	{
                                  		cin>>b;
                                  		c+=b;
                                  	}
                                  	cout<<fixed<<setprecision(4)<<c/a<<endl;
                                  }
                                  

                                  信息

                                  ID
                                  921
                                  时间
                                  1000ms
                                  内存
                                  128MiB
                                  难度
                                  5
                                  标签
                                  递交数
                                  1537
                                  已通过
                                  595
                                  上传者