来这里的应该都是mc.jiangshi.space的人

我是sandi_123，来自mc.jiangshi.space！

山龙村平原组2、2-1号

sandi_123的小窝的主人

MarsOJ页面样式修改

回忆1 OLD：

• 不要拆石墙！！！
• 不要搞破坏！！！
• 家被熊过3次（回档了）。
• 帮助LXR建造了30%的地道。
• 善于生电、PVP，拥有服务器超强装备的人之一。
• 之前放在我纪念碑上的龙蛋被偷过（是谁我不用说了）。
• 服务器玩家纪念牌也是我建的，被神人红烧PY挪到主城了，不过TA把上面的标题牌拆掉了（太可恶了）。
• 服务器的许多生电机器都是我建的（仓库也是）。
• 仓库目前是我的（很多东西都被神秘人偷了）。
• 53天团成员有LXR、9999、flame_frag（善于搞破坏）。（几乎解散）
• 建造了公共树厂。
• 房牌号是我的主意.

回忆2 OLD：

• 主基地已被Leng摧毁！（回档了）
• Leng偷窃了玩家们的许多物资！！（回档了）
• Leng破坏了仓库！！！（回档了）
• Leng烧毁我和LXR的房屋！！！！（回档了）
• Leng掠杀无辜！！！！！（回档了）

新增 NEW：

• 岩石岸的一、二层被我扩建了。
• 岩石岸一层可以直接通道大平原的精卫填海处与甘蔗机右边。
• 岩石岸的扩建处可以通道我家B1层。

大家都是神人，告辞！

主线任务：解出来↓

$$\mathbb{\sqrt[\int_{\int \iint \iiint \oint \oint_{\iint }^{\int_{\int\limits_{\int_{\int \int_{}^{\prod_{\bigvee_{ {\textstyle \bigwedge_{ {\textstyle \bigcap_{ {\textstyle \bigcap_{\iiint\limits_{\iiint\limits_{\oint_{\iiint_{\iint_{\int\limits_{\iint_{\iint\limits_{\iint\limits_{\iiint_{\lim_{x \to 0} \max_{\exp } }^{} }^{} }^{} }^{} }^{} }^{} }^{\int\limits_{\int\limits_{\iint_{\iint_{}^{} }^{} }^{} }^{} } }^{} }^{} }^{} }^{}} }^{}} }^{\int\limits_{\int\limits_{\int\limits_{\int\limits_{\int\limits_{\int\limits_{\int\limits_{\iint\limits_{\iint\limits_{\iint\limits_{\iint\limits_{\iint_{\iint_{\iint_{\int_{\int_{}^{} }^{} }^{} }^{} }^{} }^{} }^{\int\limits_{\int\limits_{}^{} }^{} } }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }} }^{\int\limits_{\int\limits_{\int_{\int_{\iint\limits_{\iint_{\int \int_{\int\limits_{}^{\int {\textstyle \coprod_{ {\textstyle \coprod_{\coprod_{\prod_{ {\textstyle \prod_{ {\textstyle \prod_{\coprod_{\prod_{}^{} }^{} }^{}} }^{}} }^{} }^{} }^{}} }^{}} } }^{\int\limits_{}^{} } }^{\int\limits_{}^{} } }^{\int \iint\limits_{}^{} } }^{} }^{} }^{} }^{\int\limits_{\int_{}^{} }^{} } } }^{} } }^{} }^{\iint\limits_{}^{ {\textstyle \sum_{\sum_{ {\textstyle \sum_{ {\textstyle \sum_{ {\textstyle \sum_{ {\textstyle \sum_{ {\textstyle \sum_{}^{}} }^{}} }^{}} }^{\int\limits_{\int\limits_{\int\limits_{\int\limits_{\int_{\int_{\iint\limits_{\iint_{\iiint\limits_{\iiint_{\oint_{\oint }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{\int_{\int \int_{\int\limits_{}^{} }^{} }^{} } }} }^{}} }^{} }^{}} } } }^{} } }^{\sqrt{\int\limits_{\iint\limits_{ {\textstyle \coprod_{ {\textstyle \coprod_{ {\textstyle \prod_{ {\textstyle \bigcap_{}^{}} }^{}} }^{}} }^{}} }^{} }^{1} } } ]{\int\limits_{\iint_{\iint\limits_{\iiint_{\iiint_{\iiint \iiint_{\iint\limits_{\oint \int\limits_{}^{} }^{} }^{} }^{} }^{\int_{\iint_{\iiint_{\iiint\limits_{\iint\limits_{\int\limits_{\int_{\iint_{\iiint\limits_{\iint\limits_{\int\limits_{\oint_{\oint }^{} }^{} }^{\sum_{\int_{\int\limits_{\int\limits_{\int\limits_{\iiint\limits_{\iint_{\iiint\limits_{\iiint \int_{\int_{\int\limits_{\int \int }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{\int\limits_{\int \iiint\limits_{\iiint_{}^{} }^{} }^{} } }^{} } }^{} }^{} }^{} }^{} }^{} }^{} }^{\int_{\int_{\int_{\int_{\int_{}^{} }^{} }^{} }^{\int\limits_{\iint\limits_{\iint_{\int_{\int\limits_{}^{} }^{} }^{} }^{\int_{\iint_{ {\textstyle \sum_{ {\textstyle \sum_{\sum_{ {\textstyle \sum_{ {\textstyle \prod_{ {\textstyle \bigwedge_{\int\limits_{\int_{\iint_{\iint \iint_{\iint\limits_{\int_{\iint_{\int\limits_{}^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{\int \iint \iint_{\iint \iiint_{\iiint \iiint_{\iiint_{\iiint_{\iiint_{\iiint_{\iiint_{\iiint_{}^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }^{} }} }^{}} }^{}} }^{} }^{}} }^{}} }^{} }^{} } }^{SB} } }^{114514} } }^{\sqrt{\int_{\iint\limits_{\begin{equation} x = a_0 + \cfrac{1}{a_1 + \cfrac{1}{a_2 + \cfrac{1}{a_3 + \cfrac{1}{a_4} } } } \end{equation}}^{}\cfrac{1}{a + \cfrac{7}{b + \cfrac{2}{9}}} =c }^{} } } }^{} } }^{} }^{ {\textstyle \sum_{\lim_{x \to 0} \csc \sec^{-1} \tan^{-1} \tan^{-1} \cot^{-1} }^{\int\limits_{\int_{\iint\limits_{\iiint\limits_{\iiint \iint\limits_{}^{} }^{} }^{} }^{} }^{} }} } }^{\iint\limits_{\iint_{ {\textstyle \coprod_{ {\textstyle \coprod_{ {\textstyle \coprod_{ {\textstyle \coprod_{ {\textstyle \coprod_{ {\textstyle \coprod_{}^{}} }^{}} }^{}} }^{}} }^{gg}} }^{sandi}} }^{} }^{\csc \cot \tan \operatorname{arccot} {\textstyle \sum_{ {\textstyle \sum_{ {\textstyle \sum_{ {\textstyle \sum_{ {\textstyle \coprod_{ {\textstyle \coprod_{ {\textstyle \coprod_{}^{}} }^{}} }^{}} }^{}} }^{}} }^{}} }^{}} } } } }$$

MarsOJ页面样式修改源码：

// ==UserScript==
// @name         Na MarsOJ
// @namespace    http://tampermonkey.net/
// @version      2.5.4
// @author       Sandi_123
// @match        *://marsoj.cn/*
// @description  这是一个免费的MarsOJ样式修改脚本。
// @icon         https://marsoj.cn/components/navigation/nav-logo-small_dark.png
// @grant        none
// @license      MIT
// @downloadURL https://update.greasyfork.org/scripts/570267/Na%20MarsOJ.user.js
// @updateURL https://update.greasyfork.org/scripts/570267/Na%20MarsOJ.meta.js
// ==/UserScript==

(function()
{
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    css+=
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        "    color: #f5f5f5;",
        "}",
		".nav {",
		"    background: #00000093;",
        "    transition:background 0s;",
        "    height: 2.8rem;",
		"}",
        ".nav__logo {",
        "    height: 2.8rem;",
        "}",
        ".nav__item:visited, .nav__item:active, .nav .nav__item {",
        "    color: #e5e5e5;",
        "    line-height: 2.62rem;",
        "    border: none;",
        "}",
        ".nav .nav__item:hover {",
        "    color: #e5e5e5;",
        "    background: #0000008c;",
        "    border: none;",
        "}",
        ".nav--shadow {",
        "    height: 2.8rem;",
        "}",
        "#panel {",
        "    background-image: url(https://s1.ax1x.com/2018/02/25/9w99XR.jpg);",
        "    background-repeat: no-repeat;",
        "    background-size: cover;",
        "    background-position: center;",
        "    background-attachment: fixed;",
        "}",
        ".footer {",
        "    background: #000000cc;",
        "    color: #f5f5f5;",
        "}",
        "h1, h2, h3, h4, h5, h6 {",
        "    color: #ffffff;",
        "}",
        "a, .link, a:visited, .link:visited, a:hover, .link:hover, a:active, .link:active {",
        "    color: #f5f5f5;",
        "}",
        "dt {",
            "color: #bfbfbf;",
        "}",
        ".section {",
        "    background: #000000f6;",
        "    box-shadow: 0 .375rem 1.375rem rgba(30, 33, 33, 0.5);",
        "}",
        ".section__title {",
        "    color: #f5f5f5;",
        "}",
        ".section__list__item {",
        "border-bottom: 1px solid #3a3a3a;",
        "}",
        ".data-table tr:nth-child(even) {",
        "    background: #42424273;",
        "}",
        ".data-table tr {",
        "    border-top: 1px solid #4a4a4a;",
        "    border-bottom: 1px solid #4a4a4a;",
        "}",
        ".data-table thead>tr {",
        "    color: #d6d6d6;",
        "    border-bottom: 1px solid #717171;",
        "}",
        ".dropdown .menu {",
        "    background: #000000fd;",
        "}",
        ".menu__link {",
        "    color: #f5f5f5;",
        "    border-left: 0;",
        "}",
        ".menu__seperator {",
        "    border-top: 1px solid #4a4a4a;",
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        ".search>input {",
        "    border: 1px solid #4a4a4a;",
        "    background: #282828;",
        "    color: #ffffff;",
        "}",
        ".section__table-header {",
        "    background: #4d4d4df2;",
        "}",
        ".page--problem_main .col--status, .page--problem_category .col--status {",
        "    border-right: 1px solid #636363;",
        "}",
        ".page--problem_main .col--tried, .page--problem_category .col--tried, .page--problem_main .col--difficulty, .page--problem_category .col--difficulty {",
        "    border-left: 1px solid #636363;",
        "}",
        ".pager.pager-top .pager__item {",
        "    border-bottom: 0",
        "}",
        ".pager.pager-top {",
        "    border-bottom: 2px solid #636363;",
        "}",
        ".pager.pager-bottom .pager__item {",
        "    border-top: 0",
        "}",
        ".pager.pager-bottom {",
        "    border-top: 2px solid #636363;",
        "}",
        ".pager__item.link, .typo .pager__item.link {",
        "    color: #f5f5f5;",
        "}",
        ".pager__item {",
        "    color: #f5f5f5;",
        "}",
        ".page--training_detail .col--status {",
        "    border-right: 1px solid #636363;",
        "}",
        ".page--training_detail .col--tried, .page--training_detail .col--difficulty {",
        "    border-left: 1px solid #636363;",
        "}",
        ".widget--category-filter__drop {",
        "    background: #424242fd;",
        "}",
        ".button:not(.codicon) {",
        "    background-color: #424242;",
        "    border: 1px solid #565656;",
        "}",
        ".button:not(.codicon), .button:not(.codicon):visited, .button:not(.codicon):hover, .typo .button:not(.codicon), .typo .button:not(.codicon):visited, .typo .button:not(.codicon):hover {",
        "    color: #f5f5f5;",
        "}",
        ".button:not(.codicon):not(.disabled):hover, .button:not(.codicon):not(.disabled):focus {",
        "    color: #555;",
        "}",
        ".problem__tag-link {",
        "    background: #555;",
        "    color: #f5f5f5 !important;",
        "}",
        ".checkbox {",
        "    color: #b1b1b1;",
        "}",
        ".checkbox:hover {",
        "    color: #888;",
        "}",
        "input.textbox, textarea.textbox {",
        "    border: 1px solid #4a4a4a;",
        "    background-color: #282828;",
        "    color: #f5f5f5;",
        "}",
        ".page--discussion_main .discussion__title a:visited, .page--discussion_node .discussion__title a:visited, .page--user_detail .discussion__title a:visited {",
        "    color: #f5f5f5;",
        "}",
        ".autocomplete-wrapper input {",
        "    background-color: #282828;",
        "    color: #f5f5f5;",
        "}",
        ".autocomplete-wrapper {",
        "    border: 0;",
        "    background: none;",
        "}",
        ".autocomplete-wrapper.focused {",
        "    border: 0;",
        "    box-shadow: none;",
        "}",
        ".select {",
        "    border: 1px solid #4a4a4a;",
        "    background-color: #282828;",
        "    color: #f5f5f5;",
        "}",
        ".page--record_main .col--status, .page--record_main .col--submit-by, .page--record_main .col--lang {",
        "    border-right: 1px solid #636363;",
        "}",
        ".page--error .error__text-container h1 {",
        "    color: #181818;",
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        ".page--error .error__text-container {",
        "    color: #3a3a3a;",
        "}",
        ".page--school_homework_detail .col--problem {",
        "    border-left: 1px solid #636363;",
        "}",
        ".page--school_homework_scoreboard .col--rank {",
        "    border-right: 1px solid #636363;",
        "}",
        ".page--school_homework_scoreboard .col--problem_detail {",
        "    border-left: 1px solid #636363;",
        "}",
        ".bp3-tag.bp3-minimal:not([class*='bp3-intent-']) {",
        "    color: #f5f5f5;",
        "}",
        ".menu__link.highlight {",
        "    background: #323232;",
        "}",
        "pre[class*=language-] {",
        "    border: 1px solid #4a4a4a;",
        "    background-color: #282828;",
        "}",
        "code[class*=language-], pre[class*=language-] {",
        "    color: #e1e1e1;",
        "}",
        ".toolbar {",
        "    background: none;",
        "}",
        "body>.marker {",
        "    background: none;",
        "}",
        "pre[class*=language-]::selection, pre[class*=language-] ::selection, code[class*=language-]::selection, code[class*=language-] ::selection {",
        "    background: #555;",
        "}",
        "label {",
        "    color: #a7a7a7;",
        "}",
        ".page--contest_main .section--contest.live {",
        "    background: #e98696f6;",
        "    background-image: -webkit-radial-gradient(left top, ellipse farthest-corner, #e9869765 0%, #e96b6b61 100%);",
        "}",
        "pre, code {",
        "    background: #1b1b1b;",
        "}",
        ".page--discussion_detail .sidebar-user-profile .user-profile-name {",
        "    color: #f5f5f5;",
        "}",
        ".supplementary a, .supplementary a:visited, .supplementary a:hover {",
        "    color: #b9b9b9;",
        "}",
        ".page--record_detail .col--case, .page--record_detail .col--status {",
        "    border-right: 1px solid #636363;",
        "}",
        ".dialog.withBg .dialog__content {",
            "background: #000000ec;",
            "border: 1px solid #212121;",
        "}",
        ".dialog {",
        "    background: #00000099;",
        "}",
        ".section__tab-container.immersive .section__tab-header-item.selected {",
        "    background: #000000f6;",
        "    color: #f5f5f5;",
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        ".page--home_domain .col--role {",
        "    border-left: 1px solid #636363;",
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        ".omnibar-toggle {",
        "    background: none;",
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        ".omnibar-toggle:hover {",
            "background: #00000094;",
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        ".omnibar-main>div:first-child input {",
        "    background: #282828;",
        "    border: 2px solid #4a4a4a;",
        "    color: #f5f5f5;",
        "}",
        "blockquote {",
        "    background: #303030;",
        "    color: #f5f5f5;",
        "}",
        "blockquote.note {",
        "    background: #303030;",
        "    color: #f5f5f5;",
        "}",
        "blockquote.warn {",
        "    background: #303030;",
        "    color: #f5f5f5;",
        "}",
        ".token.attr-name, .token.property, .token.regex, .token.entity {",
        "    color: #678cb1;",
        "}",
        ".token.atrule, .token.keyword, .token.attr-value, .language-autohotkey .token.selector, .language-json .token.boolean, .language-json .token.number, code[class*=language-css] {",
        "    color: #678cb1;",
        "}",
        ".token.string {",
        "    color: #ca7c22;",
        "}",
        ".token.punctuation, .token.operator {",
        "    color: rgb(232, 226, 183);",
        "}",
        ".token.function {",
        "    color: rgb(224, 226, 228);",
        "}",
        ".vditor-toolbar {",
        "    background-color: #303030;",
        "    border-bottom: 1px solid #636363;",
        "}",
        ".vditor {",
        "    border: 1px solid #4a4a4a;",
        "}",
        ".vditor-toolbar__item .vditor-tooltipped {",
        "    color: #f5f5f5;",
        "}",
        ".vditor-panel {",
        "    background-color: #424242fd;",
        "    color: #f5f5f5;",
        "}",
        ".vditor-panel--arrow:before {",
        "    border-bottom-color: #424242fd;",
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        "    color: #f5f5f5;",
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        "    border-top-color: #424242fd;",
        "    border-left-color: #424242fd;",
        "}",
        ".vditor-hint {",
        "    background-color: #424242fd;",
        "}",
        ".vditor-hint button {",
        "    color: #f5f5f5;",
        "}",
        ".vditor-wysiwyg pre.vditor-reset {",
        "    background: #1f1f1f;",
        "    color: #f5f5f5;",
        "}",
        ".vditor {",
        "    --textarea-background-color: #1f1f1f;",
        "}",
        ".autocomplete-list {",
        "    background-color: #424242e0;",
        "    color: #cbcbcb;",
        "}",
        ".vditor-reset pre>code {",
        "    background: #0a0a0a;",
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        ".vditor-wysiwyg__block pre:first-child code {",
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    {
	    GM_addStyle(css);
    }
    else if (typeof PRO_addStyle != "undefined")
    {
	    PRO_addStyle(css);
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    else if (typeof addStyle != "undefined")
    {
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    else
    {
        var node = document.createElement("style");
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        {
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}
)();

你们要的代码awa：

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n, k;
    cin >> n >> k;
    vector<vector<int>> dp(n + 1, vector<int>(k + 1, 0));
    for (int i = 0; i <= n; i++)
        dp[i][0] = 0;
    for (int j = 0; j <= k; j++)
        dp[0][j] = 0;
    dp[0][0] = 1;
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= k; j++)
        {
            if (i < j)
                dp[i][j] = 0;
            else
                dp[i][j] = dp[i - 1][j - 1] + dp[i - j][j];
        }
    }
    cout << dp[n][k] << endl;
	return 0;
}