#include <bits/stdc++.h>
using namespace std;
float dt(float a,float b,float c)
{
float p=(a+b+c)/2;
return sqrt(p*(p-a)*(p-b)*(p-c));
}
int main()
{
float a,b,c;
cin >> a >> b >> c;
if (a+b+c>2*max(a,max(b,c)))
{
float d = dt(a,b,c);
printf("%f %f %f la 3 canh cua tam giac\n",a,b,c);
printf("Dien tich: %f\nCac chieu cao: %f %f %f\n",d,2*d/a,2*d/b,2*d/c);
}
else printf("%f %f %f khong phai la 3 canh cua tam giac",a,b,c);
return 0;
}
=========================================================
#include <bits/stdc++.h>
using namespace std;
int ucln(int a,int b)
{
while (a*b!=0)
{
a%=b;
if(a!=0) b%=a;
}
return a+b;
}
int main()
{
int a,b;
cin >> a >> b;
printf("Ucln: %d\nBcnn: %d\n",ucln(a,b),a*b/ucln(a,b));
}
