delete pics to save space

history_source/ccf 入门篇/U5/5.5.6.cpp

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+#include<iostream>
+using namespace std;
+int n;
+bool sr[100][100];
+bool pan()
+{
+	int addx=0,addy=0;
+	for(int y=0;y<n;y++) 
+	{
+		for(int x=0;x<n;x++) if(sr[x][y]) addx++;
+		if(addx%2==1) return 0;
+		addx=0;
+	}
+	for(int x=0;x<n;x++) 
+	{
+		for(int y=0;y<n;y++) if(sr[x][y]) addy++;
+		if(addy%2==1) return 0;
+		addy=0;
+	}
+	return 1;
+}
+int main()
+{
+	while(true)
+	{
+		cin>>n;
+		for(int i=0;i<n;i++) for(int j=0;j<n;j++) cin>>sr[i][j];
+		if(pan()) cout<<"OK"<<endl;
+		else
+		{
+			int x=0,y=0;
+			for(y=0;y<n;y++)
+			{
+				for(x=0;x<n;x++)
+				{
+					sr[x][y]=!sr[x][y];
+					if(pan())break;
+					else sr[x][y]=!sr[x][y];
+				}
+				if(pan())break;
+			}
+			if(pan())cout<<"<EFBFBD><EFBFBD>"<<y+1<<"<EFBFBD><EFBFBD>,"<<"<EFBFBD><EFBFBD>"<<x+1<<"<EFBFBD><EFBFBD>"<<endl;
+			else cout<<"Corrupt"<<endl;
+		}
+	}
+}