简单配置VScode轻量级C++竞赛环境

1. 安装拓展

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Chinese是中文，需要重启才可以运行，C/C++拓展只是进行语法代码提示，不需要进行任何配置修改，默认即可。

2. 创建文件

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如上图创建好各级文件夹，其中C++是工作文件夹，.vscode是配置文件夹，里面建一个tasks.json文件，然后把下面内容复制进去

{"version": "2.0.0","tasks": [{"label": "build","type": "shell","command": "g++", // 如果没有配置环境变量可以直接改成g++.exe的文件路径"args": ["${file}","-o","${fileDirname}\\${fileBasenameNoExtension}.exe","-g","-Wall","-fexec-charset=GBK","-std=c++11"],"group": "build","presentation": {"echo": true,"reveal": "always","focus": false,"panel": "shared"},"problemMatcher": "$gcc"},{"label": "run","type": "shell","dependsOn": "build","command": "${fileDirname}\\${fileBasenameNoExtension}.exe","group": {"kind": "test","isDefault": true},"presentation": {"echo": true,"reveal": "always","focus": true,"panel": "shared","showReuseMessage": true,"clear": true}}]
}

3. 绑定快捷键

在键盘快捷方式中搜索任务，找到任务:运行测试任务，配置快捷键，看个人习惯配置，我习惯是 ctrl + r
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至此，环境就配置好了，通过快捷键运行代码，会在终端进行输入输出交互。注意，这样配置是没有debug能力的，不过竞赛选手普遍都是肉眼debug，不需要这个功能。

4. 刷题模板

配置用户代码段，选择cpp，然后把下面的内容复制进去，快捷键我配置的是acm，这样新创建一个cpp文件，输入acm回车就可以直接补全模板，如果想自定义的话也可以自行添加。

{// Place your snippets for cpp here. Each snippet is defined under a snippet name and has a prefix, body and // description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are:// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the // same ids are connected.// Example:// "Print to console": { 代码段名称// 	"prefix": "log", 代码段触发关键字// 	"body": [ 代码段主体// 		"console.log('$1');",// 		"$2"// 	],// 	"description": "Log output to console" 代码段介绍// }"template": {"prefix": "acm","body": ["#pragma GCC optimize(3, \"Ofast\", \"inline\")","#include<bits/stdc++.h>","#define int long long","#define x first","#define y second","#define pc putchar","#define debug(x) cerr << #x\" = \" << x << '\\n';","using namespace std;","inline int rd() { int X = 0, w = 0; char ch = 0; while (!isdigit(ch)) { w |= ch == '-'; ch = getchar(); } while (isdigit(ch)) X = (X << 3) + (X << 1) + (ch ^ 48), ch = getchar(); return w ? -X : X;}","inline void wr(int x) { if (x < 0) pc('-'), x = -x; if (x > 9) wr(x / 10); pc(x % 10 + '0');}","","void solve()","{","    $0","}","","signed main()","{","    int _ = 1;","    // cin >> _;","    while (_ --) solve();","    return 0;","}"],"description": "template of acm"}
}