一些工具

配置

• 备份。

• 插件1。

• 插件2。

• 壁纸：

  

vscode

运行

g++ -o a a.cpp && ./a

越界检测加设置 c++14 加 O2 加警告加显示运行时间

g++ -O2 -std=c++14 -Wall -fsanitize=address,undefined -o a a.cpp && time ./a

设置

{
    "workbench.colorTheme": "Solarized Light",
    "files.autoSave": "afterDelay",
    "editor.cursorSmoothCaretAnimation": "on",
    "workbench.list.smoothScrolling": true,
    "editor.smoothScrolling": true,
    "terminal.integrated.smoothScrolling": true,
    "workbench.iconTheme": "vscode-icons",
    "editor.minimap.enabled": false,
    "editor.cursorBlinking": "smooth",
    "terminal.integrated.enableMultiLinePasteWarning": false,
    "explorer.confirmDelete": false
}

freopen

#ifndef ONLINE_JUDGE
freopen("rand.out","r",stdin);
freopen("a.out","w",stdout);
#endif

快读快写

template<typename Tp> inline void read(Tp&x)
{
	x=0;register bool z=true;
	register char c=getchar_unlocked();
	for(;!isdigit(c);c=getchar_unlocked()) if(c=='-') z=0;
	for(;isdigit(c);c=getchar_unlocked()) x=(x<<1)+(x<<3)+(c^48);
	x=(z?x:~x+1);
}
template<typename T,typename ...Tp> inline void read(T &x,Tp &...y){read(x);read(y...);}
template<typename Tp> inline void wt(Tp x){if(x>9)wt(x/10);putchar_unlocked((x%10)+'0');}
template<typename Tp> inline void write(Tp x){if(x<0)putchar_unlocked('-'),x=~x+1;wt(x);}
template<typename T,typename ...Tp> inline void write(T x,Tp ...y){write(x);putchar_unlocked(' ');write(y...);}

解绑cin、cout

ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);

模板

#include<bits/stdc++.h>
#define ll long long 
#define endl '\n'
#define sort stable_sort
using namespace std;
const int N=1e5+10;
template<typename Tp> inline void read(Tp&x)
{
	x=0;register bool z=true;
	register char c=getchar_unlocked();
	for(;!isdigit(c);c=getchar_unlocked()) if(c=='-') z=0;
	for(;isdigit(c);c=getchar_unlocked()) x=(x<<1)+(x<<3)+(c^48);
	x=(z?x:~x+1);
}
template<typename T,typename ...Tp> inline void read(T &x,Tp &...y){read(x);read(y...);}
template<typename Tp> inline void wt(Tp x){if(x>9)wt(x/10);putchar_unlocked((x%10)+'0');}
template<typename Tp> inline void write(Tp x){if(x<0)putchar_unlocked('-'),x=~x+1;wt(x);}
template<typename T,typename ...Tp> inline void write(T x,Tp ...y){write(x);putchar_unlocked(' ');write(y...);}

signed main()
{
	
}

计算数组空间大小

void array_space() {cerr<<(sizeof(a))/1024./1024<<endl;}

对拍

• a.cpp

#include<bits/stdc++.h>
using namespace std;
signed main()
{
    freopen("rand.out","r",stdin);
    freopen("a.out","w",stdout);
}

• std.cpp

#include<bits/stdc++.h>
using namespace std;
signed main()
{
    freopen("rand.out","r",stdin);
    freopen("std.out","w",stdout);
}

• rand.cpp

#include<bits/stdc++.h>
using namespace std;
signed main()
{
    freopen("/dev/urandom","r",stdin);
    freopen("rand.out","w",stdout);
    srand(getchar()*getchar()*getchar()*time(0));
    int n=rand()%100+1;
    printf("%d\n",n);
    while(n--)
    {
        int a=rand()%100+1;
        printf("%d ",a);
    }
}

• dp.cpp

#include<bits/stdc++.h>
using namespace std;
signed main()
{
    int T=10000,tot=0;
    while(T--)
    {
        tot++;
        printf("%d ",tot);
        system("./rand; ./a; ./std");
        if(system("diff a.out std.out -Z"))
        {
            puts("WA");
            return 0;
        }
        puts("AC");
    }
}

linux 系统防死机

• 转载自 jijidawang。

watch -n 1 "/usr/bin/free | awk 'NR > 1{ if (\$3 / \$2 > 0.35) system(\"killall5\") }'"