#include<bits/stdc++.h>
using namespace std;
int main(){
    int a[2];
    cin>>a[0]>>a[1]>>a[2];
    sort(a,a+2);
    if(a[0]+a[1]<=a[2])cout<<"Not triangle";
        else{
            if(a[0]*a[0]*a[1]*a[1]==a[2]*a[2])cout<<"Right triangle";
                else if(a[0]*a[0]*a[1]*a[1]>a[2]*a[2])cout<<"Acute triangle";
                    else cout<<"Obtuse triangle";
            if(a[0]==a[1]||a[1]==a[2]){
                cout<<"\nIsosceles triangle";
                if(a[0]==a[1]==a[2])cout<<"\nEquilateral triangle";}
                }
    return 0;
}

为啥爆0？