学霸题

#include<bits/stdc++.h>
using namespace std;
int a[5];
int main(){
    cin >> a[1] >> a[2] >> a[3];
    sort(a + 1,a + 4);
    if(a[1] + a[2] <= a[3]) cout << "NO";
    else if(a[1] == a[2] && a[1] == a[3] && a[2] == a[3]) cout << "等边三角形";
    else if(a[1] == a[2] || a[2] == a[3] || a[1] == a[3]) cout << "等腰三角形";
    else cout << "一般三角形";
    return 0;
}