洛谷题单
https://studyingfather.blog.luogu.org/luogu-problem-list#
希腊字母一览表
https://p1.ssl.qhmsg.com/t01d0a98b129127e4e9.jpg
罗马数字用法
https://baike.so.com/doc/5330839-5566013.html
元素周期表读音
https://wenda.so.com/q/1378213475061647?src=130
强制提高精度
https://www.luogu.org/problemnew/solution/P2394
一行最大公约数
inline int gcd(int a,int b){ return b?gcd(b,a%b):a; }
一键驱逐int
#define int long long
int x,y,z;
signed main(){...}//然后就跟mian无关了（
结构体初始化（不打游戏真不知道
就是例如
struct Enemy //怪的结构体,并初始化各种怪
{
char name[20];
char wupin[12];
int attack;
int defense;
int health;
int money;
long int exp;
int wupin_sign;
int wupinpro;
int double_attack;
int miss;
} strongman= {"森林巨人","黄金圣衣",40,50,350,200,100,1,2,1,0},
witch= {"森林女巫","银甲",25,15,100,50,50,2,2,1,1},
xiyi= {"森林蜥蜴","铁甲",18,10,50,30,35,3,3,2,2},
big_strongman= {"森林巨人王","巨人之臂",40*5,50*5,350*5,200*5,100*5,4,4,2,0},
lion= {"草原雄狮","绝世好剑",60,30,280,200,100,5,2,1,0},
horse= {"草原野马","碧血剑",28,12,90,50,50,6,2,1,1},
bee= {"草原黄蜂","长剑",17,11,60,30,35,7,3,2,2},
shitu= {"使徒"," ",60*8,30*8,280*8,200*8,100*8,9,1,1,0},
guai= {" "," ",0,0,0,0,0,0,0,0,0};
神奇的…重载函数？
void add_edge(int u,int v,int c=0)
{
edge[++cnt]=(Edge){v,head[u],c};
head[u]=cnt;
}
for(int j=1;j<=k;++j)
{
add_edge(u+(j-1)*n,v+j*n);
add_edge(v+(j-1)*n,u+j*n);
add_edge(u+j*n,v+j*n,c);
add_edge(v+j*n,u+j*n,c);
}
//所以说没有c就自动为0
//那如果有多个这种东西会混乱吗？(挠头 或者要加逗号？
神奇的工具
//另外这篇参考资料一维的飞行路线是真的强%%%
（使用 @EternalAlexander 这位dalao的OI Painter绘制）
来自dijkstra
## pair用法
结构体重载运算符
##$(node){dis[y],[y]}$ 懒人结构体（