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19 lines
477 B
19 lines
477 B
#include <bits/stdc++.h>
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using namespace std;
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int n, a, b, c, ans = INT_MAX, x, i;
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int main() {
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ios::sync_with_stdio(false); //读入输出优化的强迫症
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cin >> n;
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for (; i < 3; i++) {
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cin >> a >> b;
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//floor(x)返回的是小于或等于x的最大整数。
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//ceil(x)返回的是大于x的最小整数。
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x = ceil(n * 1.0 / a) * b;
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//取最小值
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ans = min(x, ans);
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}
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cout << ans << endl;
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return 0;
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} |