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OI-codes/AcWing/616/616.cpp

11 lines
226 B
C++

#include <bits/stdc++.h>
using namespace std;
int main() {
double x1, y1, x2, y2;
cin >> x1 >> y1 >> x2 >> y2;
cout << fixed << setprecision(4) << sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2)) << endl;
return 0;
}