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Input:
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0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 2 0 0 0 0 0 2 0 2 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 2 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 2 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 0 0 0 2 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 0 0 2 0 0 0 0 0 2 0 0 0 2 0 0 2 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 2 0
2 0 2 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0
0 0 0 0 0 0 0 2 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 0 2 0 0 0 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 2 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 2 0 0 0 0 0 0 0 0 0 2 0 0 2 0 0 0 0 2 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 2 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 2 0 2 0 0 0 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 2 0 0 0 2 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0
0 0 2 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 2 0 0
0 0 0 2 0 2 2 0 0 0 0 0 0 0 0 0 0 0 2 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 2 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0
0 0 0 0 0 2 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 2 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 2 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 2 0 2 0 0 0 0 0 0 2 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0
0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 2 0 0 0 0 0 2 0 0 0 0 0 2 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 2 0 0 0 0 2 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 0 0 0 0 2 2 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 2 0 0 0 2 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
Output:
Case #1
8
Case #2
38
Case #3
37
Case #4
-1
Case #5
49
Code:
#include<iostream>
using namespace std;
int N, M;
int a[105][105];
int visited[105][105]; // rs
int cnt[105][105]; // rs
int indX[15]; // rs
int indY[15]; // rs
int map[15][15]; // rs
int dx[] = {-1, 0, 0, 1};
int dy[] = { 0, 1, -1, 0};
int index;
int vs[15]; // rs
int num[15];
int ans;
int indexStart;
// Queue
int qx[100000];
int qy[100000];
int front;
int rear;
bool isEmpty(){
return front == -1;
}
void push(int x, int y){
if(front == -1) front = 0;
rear++;
qx[rear] = x;
qy[rear] = y;
}
void pop(){
if(front >= rear) front = rear = -1;
else front++;
}
bool checkXY(int x1, int y1){
return x1 >= 0 && y1 >= 0 && x1 < N && y1 < M && visited[x1][y1] == 0;
}
void reset(){
for(int i = 0; i < 15; i++){
vs[i] = 0;
indX[i] = 0;
indY[i] = 0;
num[i] = 0;
for(int j = 0; j < 15; j++){
map[i][j] = 0;
}
}
for(int i = 0; i < N; i++){
for(int j = 0; j < M; j++){
visited[105][105] = 0;
cnt[105][105] = 0;
}
}
}
void Try(int u){
for(int v = 0; v < index; v++){
if(vs[v] == 0){
num[u] = v;
vs[v] = 1;
if(u == index - 1){
int sum = 0;
for(int i = 0; i < index - 1; i++){
sum += map[num[i]][num[i+1]];
}
if(sum < ans) ans = sum;
}else{
Try(u+1);
vs[v] = 0;
}
}
}
}
void BFS(int x, int y, int parent){
for(int i = 0; i < N; i++){
for(int j = 0; j < M; j++){
visited[i][j] = 0;
cnt[i][j] = 0;
}
}
front = rear = -1;
push(x, y);
visited[x][y] = 1;
while(!isEmpty()){
int topx = qx[front];
int topy = qy[front];
pop();
for(int i = 0; i < 4; i++){
int x1 = topx + dx[i];
int y1 = topy + dy[i];
if(checkXY(x1,y1)){
cnt[x1][y1] = cnt[topx][topy] + 1;
visited[x1][y1] = 1;
if(a[x1][y1] == 1 || a[x1][y1] == 3){
for(int k = 0; k < index; k++){
if(x1 == indX[k] && y1 == indY[k]){
map[parent][k] = cnt[x1][y1];
}
}
}
push(x1,y1);
}
}
}
}
int main(){
freopen("input.txt", "r", stdin);
int T; cin >> T;
for(int tc = 1; tc <= T; tc++){
cin >> N >> M;
index = 0;
reset();
for(int i = 0; i < N; i++){
for(int j = 0; j < M; j++){
cin >> a[i][j];
if(a[i][j] == 3){
indX[index] = i;
indY[index] = j;
indexStart = index;
index++;
}
if(a[i][j] == 1){
indX[index] = i;
indY[index] = j;
index++;
}
}
}
for(int i = 0; i < index; i++){
BFS(indX[i], indY[i], i);
}
ans = 1000000;
Try(0);
cout << "Case #" << tc << endl;
cout << ans << endl;
}
return 0;
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