#include <iostream>
#include <cmath>
using namespace std;

struct Point
{
    int x;
    int y;
};

struct Triangle
{
    struct Point a;
    struct Point b;
    struct Point c;
};

int dst(struct Point a, struct Point b)
{
    int x = a.x - b.y;
    int y = b.x - b.y;
    return (sqrt(x * x + y * y));
}

int obw(struct Triangle tr)
{
    return dst(tr.a, tr.b) + dst(tr.b, tr.c) + dst(tr.c, tr.a);
}

int main()
{
    struct Triangle tr
    {
        0, 0, 0, 3, 4, 0
    };
    cout << obw(tr);
    return 0;
}