#include <bits/stdc++.h> using namespace std; int main() { int a[10]; for(int i=1;i<=3;i++) { cin>>a[i]; } sort(a+1,a+3+1); if(a[1]+a[2]<=a[3]) { cout<<"Not triangle"<<endl; } else { if(a[1]*a[1]+a[2]*a[2]>a[3]*a[3]) { cout<<"Acute triangle"<<endl; } if(a[1]*a[1]+a[2]*a[2]==a[3]*a[3]) { cout<<"Right triangle"<<endl; } if(a[1]*a[1]+a[2]*a[2]<a[3]*a[3]) { cout<<"Obtuse triangle"<<endl; } if(a[1]==a[2]||a[2]==a[3]||a[1]==a[3]) { cout<<"Isosceles triangle"<<endl; } if(a[1]==a[2]&&a[2]==a[3]&&a[1]==a[3]) { cout<<"Equilateral triangle"<<endl; } } return 0; }/啥实力啊? Le Zi说话！/