17 lines
361 B
C++
17 lines
361 B
C++
#include <iostream>
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#include <cstdio>
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#include <cstring>
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#include <cmath>
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using namespace std;
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int main()
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{
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int i, j, k, N;
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double vl, d;
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while (scanf("%lf%lf", &vl, &d) == 2) {
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double dd = (int) ceil(vl / d);
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int n = (int) (sqrt(2 * dd + 0.25) - 0.5001);
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printf("%d\n", (int) dd + n);
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}
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return 0;
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}
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