USACO--starry--模拟

模拟题目的恶心真心不是吹的

#include <iostream>#include <cstring>#include <cstdio>#include <queue>#include <fstream>using namespace std;const int MAXN = 510;ofstream fout("starry.out");struct Tri{int x,y;int start_x,start_y;int end_x,end_y;};Tri p[MAXN];int ic;char now_c;char mp[MAXN][MAXN];int n,m;void init(){scanf("%d%d",&m,&n);for(int i=0;i<n;i++){scanf("%s",mp[i]);}}bool check(int x,int y){if(x>=n||x<0)return false;if(y>=m||y<0)return false;return true;}bool vis[MAXN][MAXN];int min_x,min_y;int max_x,max_y;void dfs(int x,int y){vis[x][y]=1;min_x=min(min_x,x);min_y=min(min_y,y);max_x=max(max_x,x);max_y=max(max_y,y);for(int i=-1;i<2;i++){for(int j=-1;j<2;j++){int nx = x+i;int ny = y+j;if(check(nx,ny)&&mp[nx][ny]=='1'&&!vis[nx][ny]){dfs(nx,ny);}}}}int pos[MAXN][MAXN];bool m_vis[MAXN];//mark each square is drawed or notvoid cover(int c){m_vis[c]=1;queue<int> q;q.push(p[c].x*m+p[c].y);mp[p[c].x][p[c].y]=now_c;while(!q.empty()){int u = q.front();q.pop();int x = u/m;int y = u%m;for(int i=-1;i<2;i++){for(int j=-1;j<2;j++){int nx = x+i;int ny = y+j;if(check(nx,ny)&&mp[nx][ny]=='1'){mp[nx][ny] = now_c;q.push(nx*m+ny);}}}}}char mp1[MAXN][MAXN];char mp2[MAXN][MAXN];void duichen(char smp[][MAXN],int h,int w){char temp;int num = w/2;for(int i=0;i<=h;i++){for(int j=0;j<=num;j++){temp = smp[i][j];smp[i][j] = smp[i][w-j];smp[i][w-j]=temp;}}}char mid_mp[MAXN][MAXN];void fanzhuan180(char smp[][MAXN],int h,int w){memset(mid_mp,'0',sizeof(mid_mp));for(int i=0;i<=h;i++)for(int j=0;j<=w;j++)mid_mp[i][j] = smp[i][j];int x =0,y=0;for(int i=h;i>=0;i--){y=0;for(int j=w;j>=0;j--){smp[i][j] = mid_mp[x][y];y++;}x++;} }void fanzhuan90(char smp[][MAXN],int &h,int &w){for(int i=0;i<=h;i++){for(int j=0;j<=w;j++){mid_mp[w-j][i] = smp[i][j];}}swap(h,w);for(int i=0;i<=h;i++)for(int j=0;j<=w;j++)smp[i][j]=mid_mp[i][j];}void op(char p[][MAXN],int h,int w){for(int i=0;i<h;i++){for(int j=0;j<w;j++)printf("%c",p[i][j]);puts("");}}#define bug6bool MyCmp(int h,int w){for(int i=0;i<=h;i++){for(int j=0;j<=w;j++){if(mp1[i][j]!=mp2[i][j]){return false;}}}return true;}bool judge(int st,int tar){if(st==tar)return true;bool vis[MAXN][MAXN];int h=0,w=0;int h1=0,w1=0;h=p[st].end_x-p[st].start_x;w=p[st].end_y-p[st].start_y;h1=p[tar].end_x - p[tar].start_x;w1=p[tar].end_y - p[tar].start_y;if((h!=h1&&w!=w1)&&(h!=w1&&w!=h1)){return false;}memset(vis,0,sizeof(vis));memset(mp1,'0',sizeof(mp1));memset(mp2,'0',sizeof(mp2));queue<int> q;int u,temp = p[st].x*m+p[st].y;q.push(temp);vis[p[st].x][p[st].y]=1;mp1[p[st].x-p[st].start_x][p[st].y-p[st].start_y] = '1';while(!q.empty()){u = q.front();q.pop();int x = u/m;int y = u%m;for(int i=-1;i<2;i++)for(int j=-1;j<2;j++){int nx = x+i;int ny = y+j;if(check(nx,ny)&&mp[nx][ny]=='1'&&!vis[nx][ny]){mp1[nx-p[st].start_x][ny-p[st].start_y]='1';q.push(nx*m+ny);vis[nx][ny]=1;}}}temp = p[tar].x*m+p[tar].y;memset(vis,0,sizeof(vis));q.push(temp);vis[p[tar].x][p[tar].y]=1;mp2[p[tar].x-p[tar].start_x][p[tar].y-p[tar].start_y]='1';while(!q.empty()){u=q.front();q.pop();int x = u/m;int y = u%m;for(int i=-1;i<2;i++)for(int j=-1;j<2;j++){int nx = x+i;int ny = y+j;if(check(nx,ny)&&mp[nx][ny]=='1'&&!vis[nx][ny]){q.push(nx*m+ny);vis[nx][ny]=1;mp2[nx-p[tar].start_x][ny-p[tar].start_y]='1';}}}if(h==h1&&w==w1){if(MyCmp(h,w))return true;duichen(mp2,h,w);if(MyCmp(h,w))return true;fanzhuan180(mp2,h,w);if(MyCmp(h,w))return true;duichen(mp2,h,w);if(MyCmp(h,w))return true;}if(h==w1&&w==h1){fanzhuan90(mp2,h1,w1);if(MyCmp(h,w))return true;duichen(mp2,h,w);if(MyCmp(h,w))return true;fanzhuan180(mp2,h,w);if(MyCmp(h,w))return true;duichen(mp2,h,w);if(MyCmp(h,w))return true;}return false;}#include <vector>vector<int> haha;void draw(int st){for(int i=0;i<ic;i++){if(m_vis[i])continue;if(judge(st,i)){haha.push_back(i);}}int sz = haha.size();for(int i=0;i<sz;i++){cover(haha[i]);}haha.clear();}void solve(){memset(vis,0,sizeof(vis));for(int i=0;i<n;i++){for(int j=0;j<m;j++){if(mp[i][j]=='1'&&!vis[i][j]){min_y=min_x = MAXN;max_y=max_x = -MAXN;dfs(i,j);p[ic].start_x=min_x;p[ic].start_y=min_y;p[ic].end_x=max_x;p[ic].end_y=max_y;p[ic].x=i;p[ic].y=j;pos[i][j] = ic++;}}}now_c = 'a';memset(m_vis,0,sizeof(m_vis));for(int i=0;i<n;i++){for(int j=0;j<m;j++){if(mp[i][j]=='1'){draw(pos[i][j]);now_c++;}}}for(int i=0;i<n;i++){for(int j=0;j<m;j++){printf("%c",mp[i][j]);}puts("");}}int main(){freopen("starry.in","r",stdin);freopen("starry.out","w",stdout);init();solve();return 0;}