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adc2018-system
Commit 56a93b0f authored by royus's avatar royus
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not done

parent 88f47819
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source/solver.c
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/* solver.c */
/* Last Change: 2018/08/26 (Sun) 23:31:34. */
/* Last Change: 2018/08/27 (Mon) 23:01:56. */
#define MAX_ATTEMPS 100000
#define MAX_ATTEMPS 10000
#include<stdio.h>
#include<stdlib.h>
......@@ -16,6 +16,9 @@ int connected[8*72*72/2+1]={}; //connected[0]=(number of connected lines)
int depth,height,width;
int goalx,goaly,goalz;
int lines;
int dx[6]={-1,0,0,1,0,0};
int dy[6]={0,-1,0,0,1,0};
int dz[6]={0,0,-1,0,0,1};
//z,y,x
void read(void){ //read problem
......@@ -73,129 +76,132 @@ void read(void){ //read problem
return;
}
int randline(void){ //return random line number
return rand()%lines+1;
}
void shuffle(int array[],int start,int end){
int i,j,t;
if(end==start)
return;
for(i=start;i<end;i++){
j=start+rand()%(end-start);
t=array[i];
array[i]=array[j];
array[j]=t;
}
}
int available(int nowx,int nowy, int nowz,int flag){ //return 1 when (nowx,nowy,nowz) can be connected to goal
if(avail[nowz][nowy][nowx]==-1) //goal
return 1;
if(avail[nowz][nowy][nowx]!=1&&flag==0)
return 0;
int isbranch=-1;
if(nowx>0&&avail[nowz][nowy][nowx-1]>=2)
isbranch++;
if(nowy>0&&avail[nowz][nowy-1][nowx]>=2)
isbranch++;
if(nowz>0&&avail[nowz-1][nowy][nowx]>=2)
isbranch++;
if(nowx<width-1&&avail[nowz][nowy][nowx+1]>=2)
isbranch++;
if(nowy<height-1&&avail[nowz][nowy+1][nowx]>=2)
isbranch++;
if(nowz<depth-1&&avail[nowz+1][nowy][nowx]>=2)
isbranch++;
if(isbranch>0){
avail[nowz][nowy][nowx]=1;
return 0;
}
if(avail[nowz][nowy][nowx]==1)
avail[nowz][nowy][nowx]=2;
int i,src=0;
int available(int z,int y, int x){ //return 1 when (nowx,nowy,nowz) can be connected to goal
int i,src=0,contd,isbranch;
int history[8*72*72],index=0;
int nowx=x,nowy=y,nowz=z;
int searchorder[6]; //x+-,y+-,z+-
/* for(i=0;i<6;i++) */
/* searchorder[i]=-1; */
if(nowx>goalx){
searchorder[src]=0;
src++;
}else
searchorder[5+src]=0;
if(nowy>goaly){
searchorder[src]=1;
src++;
}else
searchorder[4+src]=1;
if(nowz>goalz){
searchorder[src]=2;
src++;
}else
searchorder[3+src]=2;
if(nowx<goalx){
searchorder[src]=3;
src++;
}else
searchorder[2+src]=3;
if(nowy<goaly){
searchorder[src]=4;
src++;
}else
searchorder[1+src]=4;
if(nowz<goalz){
searchorder[src]=5;
src++;
}else
searchorder[src]=5;
/* shuffle(searchorder,0,src); */
/* shuffle(searchorder,src,6); */
int j,t;
for(i=0;i<src;i++){
j=rand()%(src);
t=searchorder[i];
searchorder[i]=searchorder[j];
searchorder[j]=t;
}
for(i=src;i<6;i++){
j=src+rand()%(6-src);
t=searchorder[i];
searchorder[i]=searchorder[j];
searchorder[j]=t;
}
/* for(i=0;i<6;i++) */
/* printf("%d ",searchorder[i]); */
/* printf("\n"); */
for(i=0;i<6;i++)
switch(searchorder[i]){
case 0:
if(nowx>0&&available(nowx-1,nowy,nowz,0))
return 1;
break;
case 1:
if(nowy>0&&available(nowx,nowy-1,nowz,0))
return 1;
break;
case 2:
if(nowz>0&&available(nowx,nowy,nowz-1,0))
return 1;
break;
case 3:
if(nowx<width-1&&available(nowx+1,nowy,nowz,0))
return 1;
break;
case 4:
if(nowy<height-1&&available(nowx,nowy+1,nowz,0))
return 1;
break;
case 5:
if(nowz<depth-1&&available(nowx,nowy,nowz+1,0))
return 1;
break;
default:
break;
/* printf("%d %d %d\n",dx[i],dy[i],dz[i]); */
while(1){
/* printf("%d %d %d\n",nowx,nowy,nowz); */
if(nowx<0||nowy<0||nowz<0||nowx>=width||nowy>=height||nowz>=depth){
printf("error %d %d %d\n",nowx,nowy,nowz);
/* printf("%d, %d\n",index,history[index]); */
/* printf("%d %d %d\n",dx[history[index]],dy[history[index]],dz[history[index]]); */
return 0;
}
if(avail[nowz][nowy][nowx]==-1){ //goal
return 1;
}
if(avail[nowz][nowy][nowx]==2)
avail[nowz][nowy][nowx]=1;
isbranch=-1;
if(nowx>0&&avail[nowz][nowy][nowx-1]>=2)
isbranch++;
if(nowy>0&&avail[nowz][nowy-1][nowx]>=2)
isbranch++;
if(nowz>0&&avail[nowz-1][nowy][nowx]>=2)
isbranch++;
if(nowx<width-1&&avail[nowz][nowy][nowx+1]>=2)
isbranch++;
if(nowy<height-1&&avail[nowz][nowy+1][nowx]>=2)
isbranch++;
if(nowz<depth-1&&avail[nowz+1][nowy][nowx]>=2)
isbranch++;
if(isbranch>0&&index){
avail[nowz][nowy][nowx]=0;
index--;
if(nowx-dx[history[index]]<0||nowy-dy[history[index]]<0||nowz-dx[history[index]]<0||nowx-dz[history[index]]>=width||nowy-dy[history[index]]>=height||nowz-dz[history[index]]>=depth){
/* printf("something wrong\n"); */
}else{
nowx-=dx[history[index]];
nowy-=dy[history[index]];
nowz-=dz[history[index]];
avail[nowz][nowy][nowx]=1;
printf("%d %d %d -\n",nowx,nowy,nowz);
/* return 0;//goback */
continue;
}
}
if(avail[nowz][nowy][nowx]==1)
avail[nowz][nowy][nowx]=2;
if(nowx>goalx){
searchorder[src]=0;
src++;
}else
searchorder[5+src]=0;
if(nowy>goaly){
searchorder[src]=1;
src++;
}else
searchorder[4+src]=1;
if(nowz>goalz){
searchorder[src]=2;
src++;
}else
searchorder[3+src]=2;
if(nowx<goalx){
searchorder[src]=3;
src++;
}else
searchorder[2+src]=3;
if(nowy<goaly){
searchorder[src]=4;
src++;
}else
searchorder[1+src]=4;
if(nowz<goalz){
searchorder[src]=5;
src++;
}else
searchorder[src]=5;
int j,t;
for(i=0;i<src;i++){
j=rand()%(src);
t=searchorder[i];
searchorder[i]=searchorder[j];
searchorder[j]=t;
}
for(i=src;i<6;i++){
j=src+rand()%(6-src);
t=searchorder[i];
searchorder[i]=searchorder[j];
searchorder[j]=t;
}
contd=1;
for(i=0;i<6&&contd;i++){
/* printf("%d\n",searchorder[i]); */
if(nowx+dx[searchorder[i]]<0||nowy+dy[searchorder[i]]<0||nowz+dx[searchorder[i]]<0||nowx+dz[searchorder[i]]>=width||nowy+dy[searchorder[i]]>=height||nowz+dz[searchorder[i]]>=depth)
continue;
if(avail[nowz+dz[searchorder[i]]][nowy+dy[searchorder[i]]][nowx+dx[searchorder[i]]]==1){
contd=0;
nowx+=dx[searchorder[i]];
nowy+=dy[searchorder[i]];
nowz+=dz[searchorder[i]];
/* printf("%d %d %d\n",dx[searchorder[i]],dy[searchorder[i]],dz[searchorder[i]]); */
printf("%d %d %d +\n",nowx,nowy,nowz);
history[index]=searchorder[i];
/* printf("%d\n",index); */
index++;
}
}
if(avail[nowz][nowy][nowx]==3||index==0)
return 0;
if(contd&&index){
avail[nowz][nowy][nowx]=0;
index--;
if(nowx-dx[history[index]]<0||nowy-dy[history[index]]<0||nowz-dx[history[index]]<0||nowx-dz[history[index]]>=width||nowy-dy[history[index]]>=height||nowz-dz[history[index]]>=depth){
/* printf("something wrong\n"); */
}else{
nowx-=dx[history[index]];
nowy-=dy[history[index]];
nowz-=dz[history[index]];
avail[nowz][nowy][nowx]=1;
printf("%d %d %d -\n",nowx,nowy,nowz);
/* printf("%d %d %d\n",dx[history[index]],dy[history[index]],dz[history[index]]); */
continue;
}
}
}
return 0;
}
......@@ -228,7 +234,7 @@ int connectable(int linea,int lineb){ //return 1 if linea can be connected when
printf("Error: Line %d\n",linea);
return 0;
}
return available(startx,starty,startz,1);
return available(startz,starty,startx);
}
void connect(int line){ //connect line
......@@ -256,9 +262,9 @@ void delete(int line){ //delete line
}
int solve(void){ //return 1 when solved, 0 when cannot
int i,j,linea,lineb;
int i,linea,lineb[10000];
for(i=0;i<MAX_ATTEMPS;i++){ //try to connect MAX_ATTEMPS times
linea=randline();
linea=rand()%lines+1;
if(connected[linea])
continue;
if(connectable(linea,0)){ //if linea canbe conneced without deleting lines
......@@ -267,19 +273,28 @@ int solve(void){ //return 1 when solved, 0 when cannot
connected[0]++;
if(connected[0]==lines)
return 1;
}
else{
for(j=0;j<MAX_ATTEMPS;j++){ //try to find a line to delete
lineb=randline();
if(connectable(linea,lineb)){
delete(lineb);
}else{
int j,t;
for(i=0;i<lines;i++){
lineb[i]=i+1;
}
for(i=0;i<lines;i++){ //shuffle
j=rand()%(lines);
t=lineb[i];
lineb[i]=lineb[j];
lineb[j]=t;
}
for(i=0;i<lines;i++){
if(connectable(linea,lineb[i])){
delete(lineb[i]);
connect(linea);
connected[linea]=1;
connected[lineb]=0;
connected[lineb[i]]=0;
break;
}
if(j==MAX_ATTEMPS-1)
if(j==MAX_ATTEMPS-1){
return 0;
}
}
}
}
......
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