#include<vector>
#include<queue>
#include<iostream>
using namespace std;
vector<pair<int,int> > g[3000000];
vector<int> tx[3000000],ty[3000000];
int sx[3000000],sy[3000000],xq[3000000],yq[3000000],n,u[3000000],xh,yh,xg[3000000],yg[3000000];
queue<int> q;
long long pa=0;
int kax(int x,int y)
{
for(int i=0;i<tx[x].size();i++)
{
int to=tx[x][i];
if(to==y)
return 0;
}
return 1;
}
int kay(int x,int y)
{
for(int i=0;i<ty[x].size();i++)
{
int to=ty[x][i];
if(to==y)
return 0;
}
return 1;
}
int ka(int x,int y)
{
int in=-1;
for(int i=0;i<g[x].size();i++)
{
int to=g[x][i].first;
int ind=g[x][i].second;
if(to==y)
{
in=ind;
break;
}
}
return in;
}
void dfsx(int v,int p)
{
sx[v]=xq[v];
long long r=0,l=0;
for(int i=0;i<tx[v].size();i++)
{
int to=tx[v][i];
if(to==p)
continue;
dfsx(to,v);
sx[v]+=sx[to];
pa+=sx[to]*(n-sx[to]);
}
}
void dfsy(int v,int p)
{
sy[v]=yq[v];
for(int i=0;i<ty[v].size();i++)
{
int to=ty[v][i];
if(to==p)
continue;
dfsy(to,v);
sy[v]+=sy[to];
pa+=sy[to]*(n-sy[to]);
}
}
int DistanceSum(int N, int *X, int *Y)
{
n=N;
for(int i=0;i<n;i++)
g[X[i]].push_back(make_pair(Y[i],i));
for(int i=0;i<n;i++)
{
if(u[i]==0)
{
int x=X[i],y=Y[i];
xg[i]=xh;
xq[xh]++;
int t=1;
while(1)
{
int aa=ka(x+t,y);
if(aa==-1)
break;
xg[aa]=xh;
xq[xh]++;
u[aa]=1;
t++;
}
t=1;
while(1)
{
int aa=ka(x-t,y);
if(aa==-1)
break;
xg[aa]=xh;
xq[xh]++;
u[aa]=1;
t--;
}
xh++;
}
}
for(int i=0;i<n;i++)
u[i]=0;
for(int i=0;i<n;i++)
{
if(u[i]==0)
{
int x=X[i],y=Y[i];
yg[i]=yh;
yq[yh]++;
int t=1;
while(1)
{
int aa=ka(x,y+t);
if(aa==-1)
break;
yg[aa]=yh;
yq[yh]++;
u[aa]=1;
t++;
}
t=1;
while(1)
{
int aa=ka(x,y-t);
if(aa==-1)
break;
yg[aa]=yh;
yq[yh]++;
u[aa]=1;
t--;
}
yh++;
}
}
for(int i=0;i<n;i++)
{
int x=X[i],y=Y[i];
int e=ka(x+1,y);
if(e!=-1 && kay(yg[i],yg[e]))
ty[yg[i]].push_back(yg[e]);
e=ka(x-1,y);
if(e!=-1 && kay(yg[i],yg[e]))
ty[yg[i]].push_back(yg[e]);
e=ka(x,y+1);
if(e!=-1 && kax(xg[i],xg[e]))
tx[xg[i]].push_back(xg[e]);
e=ka(x,y-1);
if(e!=-1 && kax(xg[i],xg[e]))
tx[xg[i]].push_back(xg[e]);
}
dfsx(0,-1);
dfsy(0,-1);
return pa;
}
Compilation message
city.cpp: In function 'int kax(int, int)':
city.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<tx[x].size();i++)
~^~~~~~~~~~~~~
city.cpp: In function 'int kay(int, int)':
city.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<ty[x].size();i++)
~^~~~~~~~~~~~~
city.cpp: In function 'int ka(int, int)':
city.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<g[x].size();i++)
~^~~~~~~~~~~~
city.cpp: In function 'void dfsx(int, int)':
city.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<tx[v].size();i++)
~^~~~~~~~~~~~~
city.cpp:48:15: warning: unused variable 'r' [-Wunused-variable]
long long r=0,l=0;
^
city.cpp:48:19: warning: unused variable 'l' [-Wunused-variable]
long long r=0,l=0;
^
city.cpp: In function 'void dfsy(int, int)':
city.cpp:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<ty[v].size();i++)
~^~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
194 ms |
211876 KB |
Output is correct |
| 2 |
Incorrect |
215 ms |
211876 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
195 ms |
212048 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
251 ms |
212748 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
227 ms |
213688 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
