#include <iostream>
#include <string>
#include <math.h>
using namespace std;
int main()
{
    string arr[]={"TRIANGULO","CIRCULO","TRAPEZIO","QUADRADO","RETANGULO"};
    double a,b,c;
    double pai= 3.14159;
    cin>>a>>b>>c;
    printf("%s: %.3lf\n",arr[0].c_str(),(1/2.0)*a*c);
    printf("%s: %.3lf\n",arr[1].c_str(),pai*pow(c,2));
    printf("%s: %.3lf\n",arr[2].c_str(),(a+b)*c/2.0);
    printf("%s: %.3lf\n",arr[3].c_str(),pow(b,2));
    printf("%s: %.3lf\n",arr[4].c_str(),a*b);
}