徐啟祐

1. #include<bits/stdc++.h>
   
2. using namespace std;
   
3. int main(){
   
4.     int a,b,c;
   
5.     cin>>a>>b>>c;
   
6.     int sum=a+b+c;
   
7.     float avg=sum/3.0;
   
8.     printf("%d+%d+%d=%d\n%.2f",a,b,c,sum,avg);
   
9. }

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