E - Евклидовое расстояние
unknown
c_cpp
2 years ago
295 B
11
Indexable
#include <bits/stdc++.h>
#define ll long long
using namespace std;
int main() {
ll xa, ya, xb, yb;
cin >> xa >> ya;
cin >> xb >> yb;
double ab = sqrt((xa - xb) * (xa - xb) + (ya - yb) * (ya - yb));
cout << fixed << setprecision(9) << ab;
return 0;
}
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