首师大附中科创教育平台 我的刷题记录 0284 最强大脑

从现在开始，我的刷题记录都开始给大家一个一个刷！今天给大家献上“E”级题：最强大脑！！

好的，以上就是最强大脑的题目要求，现在献上代码！！！当当当！！！

#include<iostream>
#include<cstdio>
#include<cmath>
#include<algorithm>
#include<queue>
#include<cstring>
#define INF 2147483647
using namespace std;
inline int read()
{
 int x=0,t=1,c;
 while(!isdigit(c=getchar()))if(c==‘-‘)t=-1;
 while(isdigit(c))x=x*10+c-‘0‘,c=getchar();
 return x*t;
}
bool is_in(int left,int down,int right,int up,int x,int y,int r)
{
 if(left>right||down<up)return false;
 int X,Y,distx,disty;
 if(x<left)X=0;
 else if(x>=left&&x<=right)X=1;
 else if(x>right)X=2;
 if(y<up)Y=0;
 else if(y>=up&&y<=down)Y=1;
 else if(y>down)Y=2;
 if(X==0)
 {
  if(Y==0)
  {
   distx=left-x;
   disty=up-y;
   if(distx+disty<=r)return true;
   else return false;
  }
  if(Y==1)
  {
   if(left-x<=r)return true;
   else return false;
  }
  if(Y==2)
  {
   distx=left-x;
   disty=y-down;
   if(distx+disty<=r)return true;
   else return false;
  }
 }
 if(X==1)
 {
  if(Y==0)
  {
   if(up-y<=r)return true;
   else return false;
  }
  if(Y==1)
  {
   return true;
  }
  if(Y==2)
  {
   if(y-down<=r)return true;
   else return false;
  }
 }
 if(X==2)
 {
  if(Y==0)
  {
   distx=x-right;
   disty=up-y;
   if(distx+disty<=r)return true;
   else return false;
  }
  if(Y==1)
  {
   if(x-right<=r)return true;
   else return false;
  }
  if(Y==2)
  {
   distx=x-right;
   disty=y-down;
   if(distx+disty<=r)return true;
   else return false;
  }
 }
}
bool is_all_in(int left,int down,int right,int up,int x,int y,int r)
{
 if(left>right||down<up)return false;
 int distx,disty;
 distx=abs(left-x);
 disty=abs(down-y);
 if(distx+disty>r)return false;
 disty=abs(y-up);
 if(distx+disty>r)return false;
 distx=abs(x-right);
 disty=abs(down-y);
 if(distx+disty>r)return false;
 disty=abs(y-up);
 if(distx+disty>r)return false;
 return true;
}
int first[140000],target[10000000],next[10000000],value[10000000],countn=1;
void AddEdge(int u,int v,int length)
{
 target[countn]=v;
 value[countn]=length;
 next[countn]=first[u];
 first[u]=countn++;
}
int from,posx,posy,r,v,A[160][160],B[160][160];
void build(int o,int left,int down,int right,int up,bool cut)
{
 if(left==right&&up==down)return;
 int lc=o<<1,rc=lc+1,m;
 AddEdge(o,lc,0);
 AddEdge(o,rc,0);
 if((cut||left==right)&&up!=down)
 {
  m=up+down>>1;
  build(lc,left,m,right,up,!cut);
  build(rc,left,down,right,m+1,!cut);
 }
 else
 {
  m=left+right>>1;
  build(lc,left,down,m,up,!cut);
  build(rc,m+1,down,right,up,!cut);
 }
}
void update(int o,int left,int down,int right,int up,bool cut)
{
 if(is_all_in(left,down,right,up,posx,posy,r))
 {
  AddEdge(from,o,v);
  return;
 }
 int lc=o<<1,rc=lc+1,m;
 if((cut||left==right)&&up!=down)
 {
  m=up+down>>1;
  if(is_in(left,m,right,up,posx,posy,r))update(lc,left,m,right,up,!cut);
  if(is_in(left,down,right,m+1,posx,posy,r))update(rc,left,down,right,m+1,!cut);
 }
 else
 {
  m=left+right>>1;
  if(is_in(left,down,m,up,posx,posy,r))update(lc,left,down,m,up,!cut);
  if(is_in(m+1,down,right,up,posx,posy,r))update(rc,m+1,down,right,up,!cut);
 }
}
int query(int o,int left,int down,int right,int up,bool cut)
{
 if(left==right&&up==down)return o;
 int lc=o<<1,rc=lc+1,m;
 if((cut||left==right)&&up!=down)
 {
  m=up+down>>1;
  if(posy<=m)return query(lc,left,m,right,up,!cut);
  else return query(rc,left,down,right,m+1,!cut);
 }
 else
 {
  m=left+right>>1;
  if(posx<=m)return query(lc,left,down,m,up,!cut);
  else return query(rc,m+1,down,right,up,!cut);
 }
}
struct State
{
 int pos,cost;
 bool operator < (const State &b)const
 {
  return cost>b.cost;
 }
}take,put;
priority_queue<State> PQ;
int fastest[140000],N,M;
int Dijkstra(int x0,int y0,int x1,int y1)
{
 memset(fastest,127,sizeof(fastest));
 while(!PQ.empty())PQ.pop();
 int s,t;
 posx=x0;
 posy=y0;
 s=query(1,1,N,M,1,0);
 posx=x1;
 posy=y1;
 t=query(1,1,N,M,1,0);
 put.pos=s;
 put.cost=0;
 PQ.push(put);
 while(!PQ.empty())
 {
  take=PQ.top();
  PQ.pop();
  if(fastest[take.pos]<take.cost)continue;
  if(take.pos==t)
  {
   return take.cost;
  }
  for(int i=first[take.pos];i;i=next[i])
  {
   if(fastest[target[i]]>take.cost+value[i])
   {
    fastest[target[i]]=take.cost+value[i];
    put.pos=target[i];
    put.cost=fastest[put.pos];
    PQ.push(put);
   }
  }
 }
 return -1;
}
int main()
{
 N=read(),M=read();
 build(1,1,N,M,1,0);
 for(int i=1;i<=N;i++)
 {
  for(int j=1;j<=M;j++)
  {
   B[i][j]=read();
  }
 }
 for(int i=1;i<=N;i++)
 {
  for(int j=1;j<=M;j++)
  {
   A[i][j]=read();
   if(B[i][j])
   {
    posx=j;
    posy=i;
    r=B[i][j];
    v=A[i][j];
    from=query(1,1,N,M,1,0);
    update(1,1,N,M,1,0);
   }
  }
 }
 int y0=read(),x0=read(),y1=read(),x1=read(),y2=read(),x2=read();
 int XtoY,YtoX,XtoZ,ZtoX,YtoZ,ZtoY,ans=INF;
 char place=‘N‘;
 XtoY=Dijkstra(x0,y0,x1,y1);
 YtoX=Dijkstra(x1,y1,x0,y0);
 XtoZ=Dijkstra(x0,y0,x2,y2);
 ZtoX=Dijkstra(x2,y2,x0,y0);
 YtoZ=Dijkstra(x1,y1,x2,y2);
 ZtoY=Dijkstra(x2,y2,x1,y1);
 if(~YtoX&&~ZtoX)
 {
  if(YtoX+ZtoX<ans)
  {
   place=‘X‘;
   ans=YtoX+ZtoX;
  }
 }
 if(~ZtoY&&~XtoY)
 {
  if(ZtoY+XtoY<ans)
  {
   place=‘Y‘;
   ans=XtoY+ZtoY;
  }
 }
 if(~XtoZ&&~YtoZ)
 {
  if(XtoZ+YtoZ<ans)
  {
   place=‘Z‘;
   ans=XtoZ+YtoZ;
  }
 }
 if(place==‘N‘)puts("NO");
 else printf("%c\n%d",place,ans);
}

最强大脑！！！！！