31 lines
600 B
C++
31 lines
600 B
C++
#include <iostream>
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#include <vector>
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static std::vector<double> max_lengths;
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static void init() {
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double length = 0;
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for (int i = 2; length < 5.5; i++) {
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max_lengths.push_back(length);
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length += 1.0 / i;
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}
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}
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int main() {
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init();
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double target_length = 0;
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for (;;) {
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std::cin >> target_length;
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if (target_length == 0) { break; }
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for (int i = 0;; i++) {
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if (max_lengths[i] > target_length) {
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std::cout << i << " card(s)" << std::endl;
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break;
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}
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}
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}
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return 0;
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}
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