delete pics to save space

p.CH0201.cpp

@@ -0,0 +1,47 @@
+//http://contest-hunter.org:83/contest/0x00%E3%80%8C%E5%9F%BA%E6%9C%AC%E7%AE%97%E6%B3%95%E3%80%8D%E4%BE%8B%E9%A2%98/0201%20%E8%B4%B9%E8%A7%A3%E7%9A%84%E5%BC%80%E5%85%B3
+#include<cstdio>
+#include<algorithm>
+#include<cstring>
+using namespace std;
+int n;
+char mp[10][10],bk[10][10];
+#define flip(x) (x)=('0'+1-((x)-'0'))
+inline void cli(int r,int c)
+{
+	mp[r][c]^=1;
+	mp[r-1][c]^=1;
+	mp[r+1][c]^=1;
+	mp[r][c-1]^=1;
+	mp[r][c+1]^=1;
+}
+inline int cal(int st)
+{
+	memcpy(mp,bk,sizeof(mp));
+	int cnt=0;
+	for(int i=1;i<=5;i++) if((st>>i)&1) { cli(1,i); cnt++; }
+	for(int i=2;i<=5;i++) for(int j=1;j<=5;j++) if(!mp[i-1][j]) { cli(i,j); cnt++; }
+	for(int i=1;i<=5;i++) for(int j=1;j<=5;j++) if(!mp[i][j]) return 7;
+	return cnt;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d",&n);
+	while(n-->0)
+	{
+		for(int i=1;i<=5;i++)
+		{
+			scanf("%s",mp[i]+1);
+			for(int j=1;j<=5;j++) mp[i][j]-='0';
+		}
+		memcpy(bk,mp,sizeof(bk));
+		int res=7;
+		for(int i=0;i<(1<<5);i++)
+			res=min(res,cal(i<<1));
+		if(res==7) res=-1;
+		printf("%d\n",res);
+	}
+	return 0;
+}