`\color{#1AD5F7}{⋆⟡}\color{#1AD5F7}{C}\color{#4DA6E6}{h}\color{#668EDD}{i}\color{#8077D5}{p}\color{#995FCD}{p}\color{#EA2F90}{⟡⋆}`

#include <bits/stdc++.h>
#define ll double
using namespace std;

int main() {
    ll a, b, c;
    cin >> a >> b >> c;
    if (a + b > c && a + c > b && b + c > a) {
        ll p = a + b + c;
        ll s = sqrt((p / 2) * (p / 2 - a) * (p / 2 - b) * (p / 2 - c));
        cout << p << "\n" << s << "\n";
        if (a == b && b == c) cout << "Tam giac deu\n";
        else if (a == b || b == c || a == c) cout << "Tam giac can\n";
        else if (a * a + b * b == c * c || a * a + c * c == b * b || b * b + c * c == a * a)
            cout << "Tam giac vuong\n";
        else cout << "Tam giac thuong\n";
    } else cout << "Khong phai tam giac\n";
}