题目描述

blablabla

样例

#include <iostream>
using namespace std;
int main()
{
    double a,b,c,t;
    cin >> a >> b >> c;
    if (b > a)
    {
        t = a;
        a = b;
        b = t;
    }
    if (c > a)
    {
        t = a;
        a = c;
        c = t;
    }
    if (c > b)
    {
        t = b;
        b = c;
        c = t;
    }
    if (a>=b+c) 
        cout << "NAO FORMA TRIANGULO" << endl;
    else
    {
        if (a * a == b * b + c * c) 
            cout << "TRIANGULO RETANGULO" << endl;
        if (a * a > b * b + c * c)
            cout << "TRIANGULO OBTUSANGULO" << endl;
        if (a * a < b * b + c * c) 
            cout << "TRIANGULO ACUTANGULO" << endl;
        if (a == b && a == c) 
            cout << "TRIANGULO EQUILATERO" << endl;
        if ((a == b && a != c && b != c) || (a == c && a != b && c != b)|| (b == c && b != a && c != a)) 
            cout << "TRIANGULO ISOSCELES" << endl;
    }
    return 0;
}

算法1

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

blablabla

算法2

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

blablabla