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21 lines
402 B
C++
21 lines
402 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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int main()
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{
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double target, cur = 2, sum = 0;
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cin >> target;
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for (int i = 1;; i++)
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{
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sum += cur;
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cur *= 0.98;
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if (sum > target)
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{
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cout << i;
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break;
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}
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}
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return 0;
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}
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