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12 lines
369 B
C++
12 lines
369 B
C++
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// R38740507
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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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double x1, y1, x2, y2, x3, y3;
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scanf("%lf%lf%lf%lf%lf%lf", &x1, &y1, &x2, &y2, &x3, &y3), printf("%.2lf\n", sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)) + sqrt((x2 - x3) * (x2 - x3) + (y2 - y3) * (y2 - y3)) + sqrt((x1 - x3) * (x1 - x3) + (y1 - y3) * (y1 - y3)));
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return 0;
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}
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