uva 1103
#include <iostream> #include <cstdio> #include <cmath> #include <cstring> #include <algorithm> #include <cstdlib> #include <stack> #include <cctype> #include <string> #include <malloc.h> #include <queue> #include <map> using namespace std; const int INF = 0xffffff; const double Pi = 4 * atan(1); const int Maxn = 200 + 10; int dir2[8][2] = {{-1,0},{0,-1},{-1,1},{1,-1},{-1,-1},{1,0},{0,1},{1,1}}; int dir[4][2] = {{1,0},{0,1},{-1,0},{0,-1}}; int m,n; int graph[Maxn][Maxn]; char alpha[] = "ADJKSW"; int con[6]; int dic[6][2] = {{1,0},{3,2},{5,1},{4,4},{0,5},{2,3}}; int num[16][4] = {{0,0,0,0},{0,0,0,1},{0,0,1,0},{0,0,1,1}, {0,1,0,0},{0,1,0,1},{0,1,1,0},{0,1,1,1}, {1,0,0,0},{1,0,0,1},{1,0,1,0},{1,0,1,1}, {1,1,0,0},{1,1,0,1},{1,1,1,0},{1,1,1,1}}; int cnt; void dfsZero(int r,int c){ if(r < 0 || r >= n || c < 0 || c >= m || graph[r][c] != 0) return; graph[r][c] = -1; for(int i = 0;i < 4;i++){ int xx = dir[i][0] + r; int yy = dir[i][1] + c; dfsZero(xx,yy); } } void dfs(int r,int c){ if(r < 0 || r >= n || c < 0 || c >= m || graph[r][c] == -1) return; if(graph[r][c] == 0){ cnt++; dfsZero(r,c); return; } graph[r][c] = -1; for(int i = 0;i < 4;i++){ int xx = dir[i][0] + r; int yy = dir[i][1] + c; dfs(xx,yy); } } int main() { #ifndef ONLINE_JUDGE freopen("inpt.txt","r",stdin); #endif int cas = 0; while(cin >> n >> m && n && m){ memset(graph,0,sizeof(graph)); memset(con,0,sizeof(con)); char str[Maxn]; for(int i = 0;i < n;i++){ cin >> str; int len = 0; for(int j = 0;j < m;j++){ if(str[j] == '0'){ for(int k = 0;k < 4;k++) graph[i][len++] = 0; continue; } int tmp; if(isalpha(str[j])) tmp = str[j] - 'a' + 10; else tmp = str[j] - '0'; for(int k = 0;k < 4;k++){ graph[i][len++] = num[tmp][k]; } } } m *= 4; for(int i = 0;i < n;i++){ if(graph[i][0] == 0) dfsZero(i,0); if(graph[i][m-1] == 0) dfsZero(i,m-1); } for(int j = 0;j < m;j++){ if(graph[0][j] == 0) dfsZero(0,j); if(graph[n-1][j] == 0) dfsZero(n-1,j); } for(int i = 0;i < n;i++){ for(int j = 0;j < m;j++){ if(graph[i][j] == 1){ cnt = 0; dfs(i,j); for(int k = 0;k < 6;k++){ if(cnt == dic[k][0]){ con[ dic[k][1] ]++; break; } } } } } cout << "Case " << ++cas << ": "; for(int i = 0;i < 6;i++){ for(int j = 0;j < con[i];j++){ cout << alpha[i]; } } cout << endl; } return 0; }
测试数据：
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Case 1: A
Case 2: WW
Case 3: AKW
Case 4: DWWW
Case 5: WWWWWWWW
Case 6: J
Case 7: ADJKSW
Case 8: WWWWWWWWWWWWWWWWWWWW
Case 9: AKW
Case 10: AAAAA
之前有一道uva572做铺垫，然后被推荐uva 1103，一开始愣是没读懂，然后就顺手搜的题解……哭…………啊啊啊！！！
主体思路是 把周边的空白扣去……
然后每个图案中间的空白区域数目都是不一样的，干后根据空白数目来判断相应的字母，
其中第一次WA是因为初始化没有把周边完全抠干净……23333333
总之，题很简单，嗯……太菜了……233333