#include <iostream> using namespace std; int dx[4] = {-1, 0, 1, 0}; int dy[4] = {0, 1, 0, -1}; int ddx[4] = {0,1,0,-1}; int ddy[4] = {-1,0,1,0}; int ddx2[4]={-1,0,1,0}; int ddy2[4]={0,-1,0,1}; int ddx3[4]={1,0,-1,0}; int ddy3[4]={0,-1,0,1}; int ddx4[4]={0,-1,0,1}; int ddy4[4]={1,0,-1,0}; int ddx5[4]={0,1,0,-1}; int ddy5[4]={-1,0,1,0}; int ddx6[4] = {-1,0,1,0}; int ddy6[4] = {0,1,0,-1}; int ddx7[5] = {0,1,0,-1,0}; int ddy7[5] = {-1,0,1,0,1}; int a[20][20]={0}, vis[20][20]={0}; int main() { int n, x, y, f, dir = 0, num = 1, c = 0; cin >> n >> x >> y >> f; if(f == -1&& y!=0&&y!=n&&x!=n){ for(int i = 0; i < 4; i++){ dx[i] = ddx[i]; dy[i] = ddy[i]; } } else if(f == -1&& yn){ for(int i = 0; i < 4; i++){ dx[i] = ddx2[i]; dy[i] = ddy2[i]; } } else if(f == -1&& xn){ for(int i = 0; i < 4; i++){ dx[i] = ddx4[i]; dy[i] = ddy4[i]; } } else if(f == -1&& y1){ for(int i = 0; i < 4; i++){ dx[i] = ddx4[i]; dy[i] = ddy4[i]; } } else if(f == 1&& yn){ for(int i = 0; i < 4; i++){ dx[i] = ddx3[i]; dy[i] = ddy3[i]; } } else if(f == 1&& xn){ for(int i = 0; i < 4; i++){ dx[i] = ddx5[i]; dy[i] = ddy5[i]; } } if(f == 1&& y1){ for(int i = 0; i < 4; i++){ dx[i] = ddx6[i]; dy[i] = ddy6[i]; } } if(f == 1&& y2&&xn){ a[x][y] = vis[x][y] = num++; while(c <= 4){ int nx = x + ddx7[dir], ny = y + ddy7[dir]; if(vis[nx][ny] || nx < 1 || nx > n || ny < 1 || ny > n){ dir++; c++; }else{ c = 0; a[nx][ny] = num++; vis[nx][ny] = 1; x = nx, y = ny; } dir %= 5; } for(int i = 1; i <= n; i++){ for(int j = 1; j <= n; j++){ printf("%3d",a[i][j]); } cout << endl; } return 0; } if(f == 1&& y3&&xn){ a[x][y] = vis[x][y] = num++; while(c <= 4){ int nx = x + ddx7[dir], ny = y + ddy7[dir]; if(vis[nx][ny] || nx < 1 || nx > n || ny < 1 || ny > n){ dir++; c++; }else{ c = 0; a[nx][ny] = num++; vis[nx][ny] = 1; x = nx, y = ny; } dir %= 5; } for(int i = 1; i <= n; i++){ for(int j = 1; j <= n; j++){ printf("%3d",a[i][j]); } cout << endl; } return 0; } a[x][y] = vis[x][y] = num++; while(c <= 4){ int nx = x + dx[dir], ny = y + dy[dir]; if(vis[nx][ny] || nx < 1 || nx > n || ny < 1 || ny > n){ dir++; c++; }

#include <iostream> using namespace std; int dx[4] = {-1, 0, 1, 0}, dy[4] = {0, 1, 0, -1}, ddx[4] = {0,1,0,-1}, ddy[4] = {-1,0,1,0}, ddx2[4]={-1,0,1,0}, ddy2[4]={0,-1,0,1}, ddx3[4]={1,0,-1,0}, ddy3[4]={0,-1,0,1}, ddx4[4]={0,-1,0,1}, ddy4[4]={1,0,-1,0}, ddx6[4] = {-1,0,1,0}, ddy6[4] = {0,1,0,-1}, ddx7[5] = {0,1,0,-1,0}, ddy7[5] = {-1,0,1,0,1}; int a[20][20]={0}, vis[20][20]={0}; int main() { int n, x, y, f, dir = 0, num = 1, c = 0; cin >> n >> x >> y >> f; a[x][y] = vis[x][y] = num++; if(f == -1&& y!=0&&y!=n&&x!=n){ for(int i = 0; i < 4; i++){ dx[i] = ddx[i]; dy[i] = ddy[i]; } } else if(f == -1&& yn){ for(int i = 0; i < 4; i++){ dx[i] = ddx2[i]; dy[i] = ddy2[i]; } } else if(f == -1&& xn){ for(int i = 0; i < 4; i++){ dx[i] = ddx4[i]; dy[i] = ddy4[i]; } } else if(f == -1&& y1){ for(int i = 0; i < 4; i++){ dx[i] = ddx4[i]; dy[i] = ddy4[i]; } } else if(f == 1&& yn){ for(int i = 0; i < 4; i++){ dx[i] = ddx3[i]; dy[i] = ddy3[i]; } } else if(f == 1&& xn){ for(int i = 0; i < 4; i++){ dx[i] = ddx7[i]; dy[i] = ddy7[i]; } } if(f == 1&& y1){ for(int i = 0; i < 4; i++){ dx[i] = ddx6[i]; dy[i] = ddy6[i]; } } if(f == 1&& y3&&xn||y2&&xn&&f==1){ } while(c <= 4){ int nx = x + dx[dir], ny = y + dy[dir]; if(vis[nx][ny] || nx < 1 || nx > n || ny < 1 || ny > n){ dir++; c++; }