delete pics to save space

2.215.cpp

@@ -0,0 +1,102 @@
+#include<bits/stdc++.h>
+using namespace std;
+const int maxn=210;
+int n,m,num;
+int a[maxn];
+bool loop,ok[maxn],vis[maxn];
+string s[maxn];
+struct node
+{
+	int id,sign;
+	node(int id=0,int sign=0):id(id),sign(sign){}
+};
+vector<node> ex[maxn];
+int dfs(int cur)
+{
+	if(!ok[cur])
+	{
+		loop=true;
+		return 0;
+	}
+	if(ex[cur].empty()) return a[cur];
+	if(vis[cur])
+	{
+		ok[cur]=false;
+		loop=true;
+		return 0;
+	}
+	vis[cur]=true;
+	for(int i=0;i<ex[cur].size();++i)
+	{
+		node& k=ex[cur][i];
+		if(ok[k.id]) a[cur]+=k.sign*dfs(k.id);
+		if(!ok[k.id])
+		{
+			ok[cur]=false;
+			loop=true;
+		}
+	}
+	ex[cur].clear();
+	return a[cur];
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(cin>>n>>m&&n&&m)
+	{
+		loop=false;
+		memset(a,0,sizeof(a));
+		memset(ok,1,sizeof(ok));
+		memset(vis,0,sizeof(vis));
+		int num=n*m;
+		for(int i=0;i<num;++i)
+		{
+			cin>>s[i];
+			string k=s[i];
+			vector<int> sign;
+			if(k[0]=='-') sign.push_back(-1);
+			else sign.push_back(1);
+			for(int j=0;j<k.length();++j)
+			{
+				if(k[j]=='-') sign.push_back(-1),k[j]=' ';
+				else if(k[j]=='+') sign.push_back(1),k[j]=' ';
+			}
+			stringstream ss(k);
+			int pos=0;
+			ex[i].clear();
+			while(ss>>k)
+			{
+				if(isdigit(k[0]))
+				{
+					istringstream tmp(k);
+					int cur;
+					tmp>>cur;
+					a[i]+=cur*sign[pos++];
+				}
+				else ex[i].push_back(node((k[0]-'A')*m+(k[1]-'0'),sign[pos++]));
+			}
+		}
+		for(int i=0;i<num;++i) dfs(i);
+		if(loop)
+		{
+			for(int i=0;i<num;++i)
+				if(!ok[i]) printf("%c%d: %s\n",i/m+'A',i%m,s[i].c_str());
+		}
+		else
+		{
+			putchar(' ');
+			for(int i=0;i<m;++i) printf("%6d",i);
+			printf("\n");
+			for(int i=0;i<n;++i)
+			{
+				printf("%c",i+'A');
+				for(int j=0;j<m;++j) printf("%6d",a[i*m+j]);
+				printf("\n");
+			}
+		}
+		printf("\n");
+	}
+	return 0;
+}