
```cpp
#include<iostream>
using namespace std;
int main(){
    int a,b,c;
    cin>>a>>b>>c;//输入
    if(a+b<=c||a+c<=b||b+c<=a){//判断+输出
        cout<<"error";
    }else if(a==b&&b==c){
        cout<<"aaa";
    }else if(a == b||a == c||b == c){
        cout<<"aab";
    }else{
        cout<<"abc";
    }
    return 0;
}
```



```cpp
#include<iostream>
using namespace std;
int main(){
    int a,b,c;
    cin>>a>>b>>c;
    if(a+b<=c||a+c<=b||b+c<=a){
        cout<<"error";
    }else if(a==b&&b==c){
        cout<<"aaa";
    }else if(a == b||a == c||b == c){
        cout<<"aab";
    }else{
        cout<<"abc";
    }
    return 0;
}
```


最简单的题解

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