main
黄海 1 year ago
parent 1be8f64792
commit 1d01cee05d

@ -2,7 +2,7 @@
using namespace std;
int k;
string kill(string s) {
int p = 0;
int p = s[s.size() - 1]; // 最后一位是默认值
for (int i = 0; i < s.size() - 1; i++)
if (s[i + 1] > s[i]) {
p = i;

@ -2,12 +2,13 @@
using namespace std;
bool check(int x) {
int sum = 0;
while (x) {
int a = x % 10;
x /= 10;
if (a % 2 == 0) return false;
sum += a;
}
return true;
return sum % 2 == 0;
}
int main() {

@ -0,0 +1,92 @@
## 复习提纲
![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403061946897.png)
以$A$为例5进制理解为$5^0,5^1,5^2,5^3$
$(1234)_5=1*4+3*5+2*25+1*125=194$
$(302)_8=2*8^0+0*8^1+3*8^2=2*1+0*8+3*64=194$
$(11000100)_2=(304)_8$ 与$(302)_8$不同,所以答案是$C$
$(C2)_{16}=2*1+12*16=194$
![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403061959229.png)
```cpp {.line-numbers}
#include <bits/stdc++.h>
using namespace std;
bool check(int x) {
int sum = 0;
while (x) {
int a = x % 10;
x /= 10;
sum += a;
}
return sum % 2 == 0;
}
int main() {
int n, m;
cin >> n >> m;
for (int i = n; i <= m; i++)
if (check(i))
cout << i << endl;
return 0;
}
```
![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403062003538.png)
```cpp {.line-numbers}
#include <bits/stdc++.h>
using namespace std;
int main() {
string s;
cin >> s;
int m;
cin >> m;
m--;
while (m--) {
string t;
for (int i = 0; i < s.size(); i++) {
int c = 1;
while (i + 1 < s.size() && s[i + 1] == s[i]) {
c++;
i++;
}
t = t + to_string(c) + s[i];
}
s = t;
}
cout << s << endl;
return 0;
}
```
![](https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403062017538.png)
```cpp {.line-numbers}
#include <bits/stdc++.h>
using namespace std;
int k;
string kill(string s) {
int p = 0;
for (int i = 0; i < s.size() - 1; i++)
if (s[i + 1] > s[i]) {
p = i;
break;
}
string res;
for (int i = 0; i < s.size(); i++)
if (i != p) res += s[i];
return res;
}
int main() {
string s;
cin >> s >> k;
for (int i = 1; i <= k; i++) s = kill(s);
cout << s << endl;
return 0;
}
```

@ -0,0 +1,454 @@
<!DOCTYPE html>
<html>
<head>
<title>复习.md</title>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
<style>
/* https://github.com/microsoft/vscode/blob/master/extensions/markdown-language-features/media/markdown.css */
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
body {
font-family: var(--vscode-markdown-font-family, -apple-system, BlinkMacSystemFont, "Segoe WPC", "Segoe UI", "Ubuntu", "Droid Sans", sans-serif);
font-size: var(--vscode-markdown-font-size, 14px);
padding: 0 26px;
line-height: var(--vscode-markdown-line-height, 22px);
word-wrap: break-word;
}
#code-csp-warning {
position: fixed;
top: 0;
right: 0;
color: white;
margin: 16px;
text-align: center;
font-size: 12px;
font-family: sans-serif;
background-color:#444444;
cursor: pointer;
padding: 6px;
box-shadow: 1px 1px 1px rgba(0,0,0,.25);
}
#code-csp-warning:hover {
text-decoration: none;
background-color:#007acc;
box-shadow: 2px 2px 2px rgba(0,0,0,.25);
}
body.scrollBeyondLastLine {
margin-bottom: calc(100vh - 22px);
}
body.showEditorSelection .code-line {
position: relative;
}
body.showEditorSelection .code-active-line:before,
body.showEditorSelection .code-line:hover:before {
content: "";
display: block;
position: absolute;
top: 0;
left: -12px;
height: 100%;
}
body.showEditorSelection li.code-active-line:before,
body.showEditorSelection li.code-line:hover:before {
left: -30px;
}
.vscode-light.showEditorSelection .code-active-line:before {
border-left: 3px solid rgba(0, 0, 0, 0.15);
}
.vscode-light.showEditorSelection .code-line:hover:before {
border-left: 3px solid rgba(0, 0, 0, 0.40);
}
.vscode-light.showEditorSelection .code-line .code-line:hover:before {
border-left: none;
}
.vscode-dark.showEditorSelection .code-active-line:before {
border-left: 3px solid rgba(255, 255, 255, 0.4);
}
.vscode-dark.showEditorSelection .code-line:hover:before {
border-left: 3px solid rgba(255, 255, 255, 0.60);
}
.vscode-dark.showEditorSelection .code-line .code-line:hover:before {
border-left: none;
}
.vscode-high-contrast.showEditorSelection .code-active-line:before {
border-left: 3px solid rgba(255, 160, 0, 0.7);
}
.vscode-high-contrast.showEditorSelection .code-line:hover:before {
border-left: 3px solid rgba(255, 160, 0, 1);
}
.vscode-high-contrast.showEditorSelection .code-line .code-line:hover:before {
border-left: none;
}
img {
max-width: 100%;
max-height: 100%;
}
a {
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
a:focus,
input:focus,
select:focus,
textarea:focus {
outline: 1px solid -webkit-focus-ring-color;
outline-offset: -1px;
}
hr {
border: 0;
height: 2px;
border-bottom: 2px solid;
}
h1 {
padding-bottom: 0.3em;
line-height: 1.2;
border-bottom-width: 1px;
border-bottom-style: solid;
}
h1, h2, h3 {
font-weight: normal;
}
table {
border-collapse: collapse;
}
table > thead > tr > th {
text-align: left;
border-bottom: 1px solid;
}
table > thead > tr > th,
table > thead > tr > td,
table > tbody > tr > th,
table > tbody > tr > td {
padding: 5px 10px;
}
table > tbody > tr + tr > td {
border-top: 1px solid;
}
blockquote {
margin: 0 7px 0 5px;
padding: 0 16px 0 10px;
border-left-width: 5px;
border-left-style: solid;
}
code {
font-family: Menlo, Monaco, Consolas, "Droid Sans Mono", "Courier New", monospace, "Droid Sans Fallback";
font-size: 1em;
line-height: 1.357em;
}
body.wordWrap pre {
white-space: pre-wrap;
}
pre:not(.hljs),
pre.hljs code > div {
padding: 16px;
border-radius: 3px;
overflow: auto;
}
pre code {
color: var(--vscode-editor-foreground);
tab-size: 4;
}
/** Theming */
.vscode-light pre {
background-color: rgba(220, 220, 220, 0.4);
}
.vscode-dark pre {
background-color: rgba(10, 10, 10, 0.4);
}
.vscode-high-contrast pre {
background-color: rgb(0, 0, 0);
}
.vscode-high-contrast h1 {
border-color: rgb(0, 0, 0);
}
.vscode-light table > thead > tr > th {
border-color: rgba(0, 0, 0, 0.69);
}
.vscode-dark table > thead > tr > th {
border-color: rgba(255, 255, 255, 0.69);
}
.vscode-light h1,
.vscode-light hr,
.vscode-light table > tbody > tr + tr > td {
border-color: rgba(0, 0, 0, 0.18);
}
.vscode-dark h1,
.vscode-dark hr,
.vscode-dark table > tbody > tr + tr > td {
border-color: rgba(255, 255, 255, 0.18);
}
</style>
<style>
/* Tomorrow Theme */
/* http://jmblog.github.com/color-themes-for-google-code-highlightjs */
/* Original theme - https://github.com/chriskempson/tomorrow-theme */
/* Tomorrow Comment */
.hljs-comment,
.hljs-quote {
color: #8e908c;
}
/* Tomorrow Red */
.hljs-variable,
.hljs-template-variable,
.hljs-tag,
.hljs-name,
.hljs-selector-id,
.hljs-selector-class,
.hljs-regexp,
.hljs-deletion {
color: #c82829;
}
/* Tomorrow Orange */
.hljs-number,
.hljs-built_in,
.hljs-builtin-name,
.hljs-literal,
.hljs-type,
.hljs-params,
.hljs-meta,
.hljs-link {
color: #f5871f;
}
/* Tomorrow Yellow */
.hljs-attribute {
color: #eab700;
}
/* Tomorrow Green */
.hljs-string,
.hljs-symbol,
.hljs-bullet,
.hljs-addition {
color: #718c00;
}
/* Tomorrow Blue */
.hljs-title,
.hljs-section {
color: #4271ae;
}
/* Tomorrow Purple */
.hljs-keyword,
.hljs-selector-tag {
color: #8959a8;
}
.hljs {
display: block;
overflow-x: auto;
color: #4d4d4c;
padding: 0.5em;
}
.hljs-emphasis {
font-style: italic;
}
.hljs-strong {
font-weight: bold;
}
</style>
<style>
/*
* Markdown PDF CSS
*/
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe WPC", "Segoe UI", "Ubuntu", "Droid Sans", sans-serif, "Meiryo";
padding: 0 12px;
}
pre {
background-color: #f8f8f8;
border: 1px solid #cccccc;
border-radius: 3px;
overflow-x: auto;
white-space: pre-wrap;
overflow-wrap: break-word;
}
pre:not(.hljs) {
padding: 23px;
line-height: 19px;
}
blockquote {
background: rgba(127, 127, 127, 0.1);
border-color: rgba(0, 122, 204, 0.5);
}
.emoji {
height: 1.4em;
}
code {
font-size: 14px;
line-height: 19px;
}
/* for inline code */
:not(pre):not(.hljs) > code {
color: #C9AE75; /* Change the old color so it seems less like an error */
font-size: inherit;
}
/* Page Break : use <div class="page"/> to insert page break
-------------------------------------------------------- */
.page {
page-break-after: always;
}
</style>
<script src="https://unpkg.com/mermaid/dist/mermaid.min.js"></script>
</head>
<body>
<script>
mermaid.initialize({
startOnLoad: true,
theme: document.body.classList.contains('vscode-dark') || document.body.classList.contains('vscode-high-contrast')
? 'dark'
: 'default'
});
</script>
<h2 id="%E5%A4%8D%E4%B9%A0%E6%8F%90%E7%BA%B2">复习提纲</h2>
<p><img src="https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403061946897.png" alt=""></p>
<p>以$A$为例5进制理解为$5^0,5^1,5^2,5^3$
$(1234)_5=1<em>4+3</em>5+2<em>25+1</em>125=194$
$(302)_8=2<em>8^0+0</em>8^1+3<em>8^2=2</em>1+0<em>8+3</em>64=194$
$(11000100)_2=(304)_8$ 与$(302)<em>8$不同,所以答案是$C$
$(C2)</em>{16}=2<em>1+12</em>16=194$</p>
<p><img src="https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403061959229.png" alt=""></p>
<pre class="hljs"><code><div><span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">&lt;bits/stdc++.h&gt;</span></span>
<span class="hljs-keyword">using</span> <span class="hljs-keyword">namespace</span> <span class="hljs-built_in">std</span>;
<span class="hljs-function"><span class="hljs-keyword">bool</span> <span class="hljs-title">check</span><span class="hljs-params">(<span class="hljs-keyword">int</span> x)</span> </span>{
<span class="hljs-keyword">int</span> sum = <span class="hljs-number">0</span>;
<span class="hljs-keyword">while</span> (x) {
<span class="hljs-keyword">int</span> a = x % <span class="hljs-number">10</span>;
x /= <span class="hljs-number">10</span>;
sum += a;
}
<span class="hljs-keyword">return</span> sum % <span class="hljs-number">2</span> == <span class="hljs-number">0</span>;
}
<span class="hljs-function"><span class="hljs-keyword">int</span> <span class="hljs-title">main</span><span class="hljs-params">()</span> </span>{
<span class="hljs-keyword">int</span> n, m;
<span class="hljs-built_in">cin</span> &gt;&gt; n &gt;&gt; m;
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = n; i &lt;= m; i++)
<span class="hljs-keyword">if</span> (check(i))
<span class="hljs-built_in">cout</span> &lt;&lt; i &lt;&lt; <span class="hljs-built_in">endl</span>;
<span class="hljs-keyword">return</span> <span class="hljs-number">0</span>;
}
</div></code></pre>
<p><img src="https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403062003538.png" alt=""></p>
<pre class="hljs"><code><div><span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">&lt;bits/stdc++.h&gt;</span></span>
<span class="hljs-keyword">using</span> <span class="hljs-keyword">namespace</span> <span class="hljs-built_in">std</span>;
<span class="hljs-function"><span class="hljs-keyword">int</span> <span class="hljs-title">main</span><span class="hljs-params">()</span> </span>{
<span class="hljs-built_in">string</span> s;
<span class="hljs-built_in">cin</span> &gt;&gt; s;
<span class="hljs-keyword">int</span> m;
<span class="hljs-built_in">cin</span> &gt;&gt; m;
m--;
<span class="hljs-keyword">while</span> (m--) {
<span class="hljs-built_in">string</span> t;
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i &lt; s.size(); i++) {
<span class="hljs-keyword">int</span> c = <span class="hljs-number">1</span>;
<span class="hljs-keyword">while</span> (i + <span class="hljs-number">1</span> &lt; s.size() &amp;&amp; s[i + <span class="hljs-number">1</span>] == s[i]) {
c++;
i++;
}
t = t + to_string(c) + s[i];
}
s = t;
}
<span class="hljs-built_in">cout</span> &lt;&lt; s &lt;&lt; <span class="hljs-built_in">endl</span>;
<span class="hljs-keyword">return</span> <span class="hljs-number">0</span>;
}
</div></code></pre>
<p><img src="https://dsideal.obs.cn-north-1.myhuaweicloud.com/HuangHai/BlogImages/202403062017538.png" alt=""></p>
<pre class="hljs"><code><div><span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">&lt;bits/stdc++.h&gt;</span></span>
<span class="hljs-keyword">using</span> <span class="hljs-keyword">namespace</span> <span class="hljs-built_in">std</span>;
<span class="hljs-keyword">int</span> k;
<span class="hljs-function"><span class="hljs-built_in">string</span> <span class="hljs-title">kill</span><span class="hljs-params">(<span class="hljs-built_in">string</span> s)</span> </span>{
<span class="hljs-keyword">int</span> p = <span class="hljs-number">0</span>;
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i &lt; s.size() - <span class="hljs-number">1</span>; i++)
<span class="hljs-keyword">if</span> (s[i + <span class="hljs-number">1</span>] &gt; s[i]) {
p = i;
<span class="hljs-keyword">break</span>;
}
<span class="hljs-built_in">string</span> res;
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i &lt; s.size(); i++)
<span class="hljs-keyword">if</span> (i != p) res += s[i];
<span class="hljs-keyword">return</span> res;
}
<span class="hljs-function"><span class="hljs-keyword">int</span> <span class="hljs-title">main</span><span class="hljs-params">()</span> </span>{
<span class="hljs-built_in">string</span> s;
<span class="hljs-built_in">cin</span> &gt;&gt; s &gt;&gt; k;
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">1</span>; i &lt;= k; i++) s = kill(s);
<span class="hljs-built_in">cout</span> &lt;&lt; s &lt;&lt; <span class="hljs-built_in">endl</span>;
<span class="hljs-keyword">return</span> <span class="hljs-number">0</span>;
}
</div></code></pre>
</body>
</html>
Loading…
Cancel
Save