Cod sursa(job #2506751)

Utilizator armigheGheorghe Liviu Armand armighe Data 8 decembrie 2019 18:32:55
Problema Ograzi Scor 10
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 5.68 kb
#include<fstream>
#include<map>
#include<vector>
using namespace std;
ofstream g("ograzi.out");
class InputReader {
  private:
    static const int BUFF_SIZE = 100000;
    FILE *f;
    int bp;
    char buff[BUFF_SIZE];
    inline void nxt() {
      if (++bp == BUFF_SIZE) {
        fread(buff, sizeof(char), BUFF_SIZE, f);
        bp = 0;
      }
    }
  public:
    InputReader (const char *file_name) {
      f = fopen(file_name, "r");
      bp = BUFF_SIZE - 1;
    }
    void close() {
      fclose(f);
    }
    InputReader& operator >> (int &num) {
      num = 0;
      while (isdigit(buff[bp]) == 0&&buff[bp]!='-')
        nxt();
      int semn=1;
      if(buff[bp]=='-')
      {
        semn=-1;
        nxt();
      }
      while (isdigit(buff[bp])) {
        num = num * 10 + (buff[bp] - '0')*semn;
        nxt();
      }
      return *this;
    }
} f("ograzi.in");
struct elem
{
    int x,y;
    bool operator < (const elem &a) const
    {
        if(a.x==x)
            return a.y<y;
        return a.x<x;
    }
};
map<elem,vector<elem>>p;
int main()
{
    int n,m,a,b,x,y,ox,oy,sol=0,j,l,ok,xx,yy,i;
    f>>n>>m>>b>>a;
    for(i=1;i<=n;i++)
    {
        f>>ox>>oy;
        x=ox/a;
        y=oy/b;
        if(ox%a!=0)
        {
            if(oy%b!=0)
            {
                p[{x,y}].push_back({ox,oy});
                p[{x+1,y}].push_back({ox,oy});
                p[{x,y+1}].push_back({ox,oy});
                p[{x+1,y+1}].push_back({ox,oy});
            }
            else
            {
                p[{x,y}].push_back({ox,oy});
                p[{x+1,y}].push_back({ox,oy});
                p[{x,y+1}].push_back({ox,oy});
                p[{x+1,y+1}].push_back({ox,oy});
                p[{x,y-1}].push_back({ox,oy});
                p[{x+1,y-1}].push_back({ox,oy});
            }
        }
        else
        {
            if(oy%b!=0)
            {
                p[{x,y}].push_back({ox,oy});
                p[{x+1,y}].push_back({ox,oy});
                p[{x,y+1}].push_back({ox,oy});
                p[{x+1,y+1}].push_back({ox,oy});
                p[{x-1,y}].push_back({ox,oy});
                p[{x-1,y+1}].push_back({ox,oy});
            }
            else
            {
                p[{x,y}].push_back({ox,oy});
                p[{x+1,y}].push_back({ox,oy});
                p[{x,y+1}].push_back({ox,oy});
                p[{x+1,y+1}].push_back({ox,oy});
                p[{x,y-1}].push_back({ox,oy});
                p[{x+1,y-1}].push_back({ox,oy});
                p[{x-1,y+1}].push_back({ox,oy});
                p[{x-1,y}].push_back({ox,oy});
                p[{x-1,y-1}].push_back({ox,oy});
            }
        }
    }
    for(i=1;i<=m;i++)
    {
        f>>ox>>oy;
        x=ox/a;
        y=oy/a;
        ok=0;
        if(ox%a!=0)
        {
            if(oy%b!=0)
            {
                l=p[{x,y}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
            }
            else
            {
                l=p[{x,y}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
                l=p[{x,y-1}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
            }
        }
        else
        {
            if(oy%b!=0)
            {
                l=p[{x,y}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
                l=p[{x-1,y}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
            }
            else
            {
                l=p[{x,y}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
                l=p[{x,y-1}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
                l=p[{x-1,y}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
                l=p[{x-1,y-1}].size();
                for(j=0;j<l&&ok==0;j++)
                {
                    xx=p[{x,y}][j].x;
                    yy=p[{x,y}][j].y;
                    if(ox>=xx&&ox<=xx+a&&oy>=yy&&oy<=yy+b)
                        sol++,ok=1;
                }
            }
        }
    }
    g<<sol;
    return 0;
}