题解 100% AC

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