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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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