P6124 - [GESP202312 二级] 小杨做题 - ZUFEOJ

内存限制：256 MB 时间限制：2 S

题面：Markdown 评测方式：文本比较上传者：

提交：1 通过：1

提交提交记录统计 Web Board

为了准备考试，小杨每天都要做题。第 $1$ 天，小杨做了 $a$ 道题；第 $2$ 天，小杨做了 $b$ 道题；从第 $3$ 天起，小杨每天做的题目数量是前两天的总和。此外，小杨还规定，当自己某一天做了大于或等于 $m$ 题时，接下来的所有日子里，他就再也不做题了。请问，到了第 $N$ 天，小杨总共做了多少题呢？

<p style="color:#404040;font-family:-apple-system, bl<x>inkMacSystemFont, "font-size:16px;background-color:#FFFFFF;"> 总共 <span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut"></span><span class="mord">4</span></span></span> 行。第一行一个整数 <span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">a</span></span></span>，第二行一个整数 <span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">b</span></span></span>，第三行一个整数 <span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">m</span></span></span>，第四行一个整数 <span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">N</span></span></span>。 <br /> <p style="color:#404040;font-family:-apple-system, bl<x>inkMacSystemFont, "font-size:16px;background-color:#FFFFFF;"> 保证 <span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut" style="vertical-align:-0.136em;"></span><span class="mord">0</span><span class="mspace"></span><span class="mrel">≤</span><span class="mspace"></span><span class="strut" style="vertical-align:-0.1944em;"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">a</span><span class="mpunct">,</span><span class="mspace"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">b</span><span class="mspace"></span><span class="mrel">≤</span><span class="mspace"></span><span class="strut"></span><span class="mord">10</span></span></span>；<span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut" style="vertical-align:-0.1944em;"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">a</span><span class="mpunct">,</span><span class="mspace"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">b</span><span class="mspace"></span><span class="mrel"><</span><span class="mspace"></span><span class="strut" style="vertical-align:-0.0391em;"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">M</span><span class="mspace"></span><span class="mrel"><</span><span class="mspace"></span><span class="strut" style="vertical-align:-0.1944em;"></span><span class="mord">1</span><span class="mpunct">,</span><span class="mspace"></span><span class="mord">000</span><span class="mpunct">,</span><span class="mspace"></span><span class="mord">000</span></span></span>；<span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, ""><span class="katex-html"><span class="strut" style="vertical-align:-0.136em;"></span><span class="mord">3</span><span class="mspace"></span><span class="mrel">≤</span><span class="mspace"></span><span class="strut" style="vertical-align:-0.136em;"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">N</span><span class="mspace"></span><span class="mrel">≤</span><span class="mspace"></span><span class="strut"></span><span class="mord">364</span></span></span>。 <br />

<span style="color:#404040;font-family:-apple-system, bl<x>inkMacSystemFont, "font-size:16px;background-color:#FFFFFF;">一行一个整数，表示小杨 </span><span class="katex" style="font-size:1.21em;line-height:1.2;font-family:KaTeX_Main, "color:#404040;background-color:#FFFFFF;"><span class="katex-html"><span class="strut"></span><span class="mord mathnormal" style="font-family:KaTeX_Math;font-style:italic;">N</span></span></span><span style="color:#404040;font-family:-apple-system, bl<x>inkMacSystemFont, "font-size:16px;background-color:#FFFFFF;"> 天里总共做了多少题目。</span>