| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 19027 | suhgyuho_william | Rail (IOI14_rail) | C++98 | 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 "rail.h"
#include <algorithm>
#include <stdio.h>
using namespace std;
int dis0[5010];
int disx[5010];
int bef[5010],next[5010];
int op[5010],num[5010];
bool cmp(int x,int y){
return dis0[x] < dis0[y];
}
bool cmp2(int x,int y){
return disx[x] < disx[y];
}
void findLocation(int N, int first, int location[], int stype[]){
int i,j;
int small,x;
int t,v,nv;
int rear,tmp;
location[0] = first; stype[0] = 1;
small = 999999999;
for(i=1; i<N; i++){
dis0[i] = getDistance(0,i);
if(small > dis0[i]){
small = dis0[i];
x = i;
}
}
location[x] = first+dis0[x];
stype[x] = 2;
for(i=1; i<N; i++){
if(i == x) continue;
disx[i] = getDistance(x,i);
if(dis0[i] == dis0[x]+disx[i]) op[i] = 2;
else op[i] = 1;
}
rear = 0;
for(i=1; i<N; i++){
if(op[i] == 1){
rear++;
num[rear] = i;
}
}
sort(num+1,num+rear+1,cmp);
tmp = 0;
for(i=1; i<=rear; i++){
v = num[i];
t = getDistance(v,0);
if(dis0[v] == t){
location[v] = first+dis0[v];
stype[v] = 2;
bef[v] = tmp;
tmp = v;
}else{
for(j=1; j<i; j++){
nv = num[j];
if(stype[nv] == 1) continue;
location[v] = location[nv]-(t-dis0[nv]);
if(location[bef[nv]] < location[v] && location[v] < location[nv]) break;
}
if(j == i) while(true){}
stype[v] = 1;
}
}
rear = 0;
for(i=1; i<N; i++){
if(op[i] == 2){
rear++;
num[rear] = i;
}
}
sort(num+1,num+rear+1,cmp2);
tmp = N; location[N] = first;
for(i=1; i<=rear; i++){
v = num[i];
if(tmp == N){
stype[v] = 1;
location[v] = location[x]-disx[v];
next[v] = tmp;
tmp = v;
continue;
}
t = getDistance(tmp,v);
if(disx[v] == disx[tmp]+t){
stype[v] = 2;
for(j=1; j<i; j++){
nv = num[j];
if(stype[nv] == 2) continue;
location[v] = location[nv]+disx[v]-disx[nv];
if(location[nv] < location[v] && location[v] < location[next[nv]]) break;
}
}else{
stype[v] = 1;
location[v] = location[x]-disx[v];
next[v] = tmp;
tmp = v;
}
}
//for(i=0; i<N; i++) printf("%d %d\n",stype[i],location[i]);
}