delete pics to save space

2.1592.cpp

@@ -0,0 +1,73 @@
+#include<iostream>
+#include<string>
+#include<sstream>
+#include<map>
+#include<set>
+using namespace std;
+map<string,int> h_si;
+map<pair<int,int>,int> hsh;
+string h_is[100005];
+int mp[10005][15],m,n;
+int ID(const string& s)
+{
+	if(h_si.count(s)) return h_si[s];
+	int t=h_si.size();
+	h_si[s]=t;
+	h_is[t]=s;
+	return t;
+}
+void solve()
+{
+	string s;
+	int i,j,k,la;
+	for(i=1;i<=n;i++)
+	{
+		getline(cin,s);
+		s+=',';
+//		cout<<'\t'<<s<<endl<<'\t'<<s.size()<<endl;
+		k=la=0;
+		for(j=1;j<=m;j++)
+		{
+			for(;k<s.size()&&s[k]!=',';k++); 
+			mp[i][j]=ID(s.substr(la,k-la));
+			k++;
+			la=k;
+		}
+	}
+	pair<int,int> t;
+	for(i=1;i<m;i++)
+		for(j=i+1;j<=m;j++)
+		{
+			hsh.clear();
+			for(k=1;k<=n;k++)
+			{
+				t=make_pair(mp[k][i],mp[k][j]);
+				if(hsh.count(t))
+				{
+					cout<<"NO\n"<<hsh[t]<<' '<<k<<'\n'<<i<<' '<<j<<endl;
+					return;
+				}
+				else hsh[t]=k;
+			}
+		}
+	cout<<"YES"<<endl;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(cin>>n>>m)
+	{
+		h_si.clear();
+		cin.get();
+		solve();
+	}
+	return 0;
+}
+/*
+NO
+2 3
+2 3
+YES
+*/