| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 114297 | dorijanlendvaj | Land of the Rainbow Gold (APIO17_rainbow) | C++14 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "rainbow.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define x first
#define y second
#define pii pair<int,int>
#define pb push_back
#define eb emplace_back
using namespace std;
using namespace __gnu_pbds;
using ll=long long;
int dx[]={0,1,0,-1,1,1,-1,-1};
int dy[]={1,0,-1,0,1,-1,1,-1};
int n,m;
set<pii> s;
vector<pii> ou,prr;
const int SZ=32987,N=200010;
bool re[SZ/30][SZ/30];
int c1[N],c2[N],c3[N];
vector<pair<ll,int>> ht[SZ],ht1[SZ];
vector<int> sv,sv1;
vector<pii> out;
vector<pii> in[100010];
void change(ll i,int x,bool t)
{
if (t==0)
{
ll i1=i;
i+=1872432922ll;
i^=0x95872901;
i%=SZ;
//cout<<i<<' '<<i1<<endl;
for (auto &a: ht[i]) if (a.x==i1)
{
a.y=x;
// cout<<"found"<<endl;
return;
}
//cout<<"made"<<endl;
ht[i].pb({i1,x});
sv.pb(i);
}
else
{
ll i1=i;
i+=1872432922ll;
i^=0x95872901;
i%=SZ;
for (auto &a: ht1[i]) if (a.x==i1)
{
a.y=x;
return;
}
ht1[i].pb({i1,x});
sv1.pb(i);
}
}
int get(ll i,bool t)
{
if (t==0)
{
ll i1=i;
i+=1872432922ll;
i^=0x95872901;
i%=SZ;
//cout<<i<<endl;
for (auto a: ht[i]) if (a.x==i1) return a.y;
return 0;
}
else
{
ll i1=i;
i+=1872432922ll;
i^=0x95872901;
i%=SZ;
for (auto a: ht1[i]) if (a.x==i1) return a.y;
return 0;
}
}
void clearHT(bool t)
{
if (t==0)
{
for (auto a: sv) ht[a].clear();
sv.clear();
}
else
{
for (auto a: sv1) ht1[a].clear();
sv1.clear();
}
}
bool ok(int i,int j)
{
if (get(i*200000ll+j,1)) return 0;
for (int k=0;k<8;++k) if (get((i+dx[k])*200000ll+(j+dy[k]),1)==1) return 1;
return 0;
}
void dfs(int i,int j)
{
if (!ok(i,j)) return;
change(i*200000ll+j,2,1);
//cout<<i<<' '<<j<<endl;
for (int k=0;k<8;++k)
{
int i1=i+dx[k],j1=j+dy[k];
//cout<<i<<' '<<j<<' '<<i1<<' '<<j1<<endl;
dfs(i1,j1);
}
//cout<<"end "<<i<<' '<<j<<endl;
}
void dfs2(int i,int j,int c)
{
if (!ok(i,j)) return;
change(i*200000ll+j,1000+c,1);
in[c].pb({i,j});
for (int k=0;k<8;++k)
{
int i1=i+dx[k],j1=j+dy[k];
dfs2(i1,j1,c);
}
}
void init(int R, int C, int sr, int sc, int M, char *S) {
set<pii> pros;
n=R;
m=C;
--sr;
--sc;
for (int i=0;i<M;++i)
{
//if (s.find({sr,sc})!=s.end()) s.erase({sr,sc});
pros.insert({sr,sc});
for (int k=0;k<8;++k) s.insert({sr+dx[k],sc+dy[k]});
if (S[i]=='W') --sc;
if (S[i]=='E') ++sc;
if (S[i]=='N') --sr;
if (S[i]=='S') ++sr;
}
pros.insert({sr,sc});
for (auto a: pros) prr.pb(a);
for (auto a: prr) re[a.x][a.y]=1;
for (auto a: prr) change(a.x*200000ll+a.y,1,1);
for (int k=0;k<8;++k) s.insert({sr+dx[k],sc+dy[k]});
for (auto a: pros) if (s.find(a)!=s.end()) s.erase(a);
for (auto a: s) ou.pb(a);
dfs(ou[0].x,ou[0].y);
int cc=0;
for (auto a: ou) if (ok(a.x,a.y)) dfs2(a.x,a.y,cc++);
//for (auto a: ou) cout<<a.x<<' '<<a.y<<endl;
for (int i=0;i<m;++i)
{
c1[i+1]=c1[i];
if (get(i,1)!=1 && (i==0 || get(i-1,1)==1)) ++c1[i+1];
c2[i+1]=c2[i];
if (get(i+200000,1)!=1 && (i==0 || get(i+199999,1)==1)) ++c2[i+1];
c3[i+1]=c3[i];
int a=(get(i+200000,1)==1)*2+(get(i,1)==1);
int b;
if (i==0) b=3;
else b=(get(i+199999,1)==1)*3+(get(i-1,1)==1);
if ((b|a)==3 && (b&a)!=3) ++c3[i+1];
}
}
int cnt,z[61][61],par[1000050];
bool bio[100050];
vector<int> sss;
bool pos[1000050];
vector<int> nap;
//gp_hash_table<ll,int> nodes;
void add(int i)
{
nap.pb(i);
par[i]=i;
pos[i]=1;
++cnt;
}
int find(int i)
{
if (!pos[i]) return -1;
if (i==par[i]) return i;
return par[i]=find(par[i]);
}
void merge(int a,int b)
{
a=find(a);
b=find(b);
if (a==-1 || b==-1) return;
if (a==b) return;
par[a]=b;
--cnt;
}
void clear()
{
for (auto x: nap)
{
par[x]=-1;
pos[x]=0;
}
nap.clear();
cnt=0;
}
bool rok(int i,int j,int x1,int y1,int x2,int y2)
{
return (i>=x1 && j>=y1 && i<=x2 && j<=y2 && !re[i][j]);
}
int colour(int ar, int ac, int br, int bc) {
int x1=ar-1,x2=br,y1=ac-1,y2=bc;
if (x1==0)
{
if (x2==1) return c1[y2]-c1[y1];
else return c3[y2]-y3[y1];
}
else return c2[y2]-c2[y1];
}