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20 lines
382 B
C++
20 lines
382 B
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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double pi2 = acos(-1) * 2;
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int main()
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{
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int T, N;
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cin >> T;
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while (T--)
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{
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cin >> N;
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if (N)
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printf("%.8lf\n", N * N / pi2);
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else
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puts("Impossble");
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}
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return 0;
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}
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