delete pics to save space

2.11520.cpp

@@ -0,0 +1,32 @@
+#include<cstdio>
+#include<cstring>
+const int maxn=15;
+char grid[maxn][maxn];
+int T,n;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d",&T);
+	for(int kase=1;kase<=T;kase++)
+	{
+		scanf("%d",&n);
+		for(int i=0;i<n;i++) scanf("%s",grid[i]);
+		for(int i=0;i<n;i++)
+			for(int j=0;j<n;j++)
+				if(grid[i][j]=='.')
+					for(char ch='A';ch<='Z';ch++)
+					{
+						bool ok=true;
+						if(i>0&&grid[i-1][j]==ch) ok=false;
+						if(i<n-1&&grid[i+1][j]==ch) ok=false;
+						if(j>0&&grid[i][j-1]==ch) ok=false;
+						if(j<n-1&&grid[i][j+1]==ch) ok=false;
+						if(ok) { grid[i][j]=ch; break; }
+					}
+		printf("Case %d:\n",kase);
+		for(int i=0;i<n;i++) printf("%s\n",grid[i]);
+	}
+	return 0;
+}