(2)#includeusing namespace std;int a,b,c;void f(int a,int b,int c){int s=(a+b+c)/3;if(s>=85) cout<<"优秀";else if(s>=60&&s<85) cout<<"良好";else if(s<60) cout<<"不及格";return;}int main(){cin>>a>>b>>c;f(a,b,c);return 0;}