#include <iostream>
#include <fstream>
#include <cmath>
#include <sstream>
using namespace std;
int main()
{
float miasta[130][3];
float odleglosc[130][130];
float c = 1000.0;
float wspx, wspy, a, cos;
float suma = 0.0, suma_aktualna = 0.0;
stringstream trasaakt, trasa;
ifstream plik;
plik.open("ch130.tsp");
plik >> cos;
int i = 0;
while( !plik.eof() )
{
plik >> a >> wspx >> wspy;
miasta[i][0] = wspx;
miasta[i][1] = wspy;
miasta[i][2] = 0;
i++;
}
for(int i = 0; i < 130; i++)
for(int j = 0; j < 130; j++)
odleglosc[i][j] = sqrt(pow(miasta[j][0] - miasta[i][0], 2) + pow(miasta[j][1] - miasta[i][1], 2));
for(int i = 0; i < 130; i++)
{
miasta[i][2] = 1;
int x = i;
int y;
for(int k = 0; k < 129; k++)
{
for(int j = 0; j < 130; j++)
{
if(odleglosc[x][j] != 0 && miasta[j][2] == 0 && odleglosc[x][j] < c)
{
c = odleglosc[x][j];
y = j;
}
}
suma += odleglosc[x][y];
x = y;
miasta[y][2] = 1;
}
suma += odleglosc[x][i];
for(int c = 0; c < 130; c++) miasta[c][2] = 0;
cout << suma << endl;
suma = 0;
}
}
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