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 "rail.h"
#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
using namespace std;
const int maxn=5005;
int kesh[maxn][maxn],N,idxC,idxD,poz[maxn],tip[maxn];
vector<pair<int,int>> V;
int dist(int a,int b){
if(a==b)
return 0;
if(kesh[a][b]==-2){
// cout<<a<<" - "<<b<<": ";
int x=getDistance(a,b);
// cout<<x<<endl;
kesh[a][b]=kesh[b][a]=x;
}
return kesh[a][b];
}
vector<int> C,D;
void findLocation(int n, int first, int location[], int stype[]){
N=n;
for(int i=0;i<N;i++)
for(int j=0;j<N;j++)
kesh[i][j]=-2;
location[0]=first;
stype[0]=1;
if(N==1)
return;
for(int i=1;i<N;i++)
V.push_back({dist(0,i),i});
sort(V.begin(),V.end());
idxC=0;
poz[0]=first;
tip[0]=1;
idxD=V[0].s;
poz[idxD]=first+dist(0,idxD);
tip[idxD]=2;
for(int iii=1;iii<V.size();iii++){
int x=V[iii].s;
int dc=dist(x,idxC);
int dd=dist(x,idxD);
if(min(dc,dd)<dist(idxC,idxD)){
int dpoz=1e9;
for(int c:C){ /// Ako je D
int p1=poz[idxC]+dc;
int p2=poz[c]+dd-(poz[idxD]-poz[c]);
if(p1==p2)
dpoz=-p1;
}
for(int d:D){ /// Ako je C
int p1=poz[d]-(dc-(poz[d]-poz[idxC]));
int p2=poz[idxD]-dd;
if(p1==p2)
dpoz=p1;
}
if(dpoz==1e9){
if(dc<dd)
dpoz=-(poz[idxC]+dc);
else
dpoz=poz[idxD]-dd;
}
if(dpoz<0){
tip[x]=2;
poz[x]=-dpoz;
}
else{
tip[x]=1;
poz[x]=dpoz;
}
}
else{
int dpoz=1e9;
for(int c:C){ /// Ako je D
int p1=poz[idxC]+dc;
int p2=poz[c]+dd-(poz[idxD]-poz[c]);
if(p1==p2)
dpoz=-p1;
}
for(int d:D){ /// Ako je C
int p1=poz[d]-(dc-(poz[d]-poz[idxC]));
int p2=poz[idxD]-dd;
if(p1==p2)
dpoz=p1;
}
if(dpoz==1e9){
if(dc<dd)
dpoz=-(poz[idxC]+dc);
else
dpoz=poz[idxD]-dd;
}
if(dpoz<0){
tip[x]=2;
poz[x]=-dpoz;
}
else{
tip[x]=1;
poz[x]=dpoz;
}
}
if(tip[x]==1)
C.push_back(x);
else
D.push_back(x);
if(tip[x]==1 and poz[x]<poz[idxC])
idxC=x;
if(tip[x]==2 and poz[x]>poz[idxC])
idxD=x;
}
for(int i=1;i<N;i++){
location[i]=poz[i];
stype[i]=tip[i];
}
}
Compilation message (stderr)
rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:40:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | for(int iii=1;iii<V.size();iii++){
| ~~~^~~~~~~~~
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