delete pics to save space

2023-08-03 09:22:52 +08:00
commit de60cd6ed4
1334 changed files with 66221 additions and 0 deletions
--- a/2.506.cpp
+++ b/2.506.cpp
@ -0,0 +1,101 @@
+#include<bits/stdc++.h>
+using namespace std;
+const int MAXN=1024000;
+map<string,int> name2id;
+string id2name[MAXN];
+vector<int> depend[MAXN],depended[MAXN];
+int status[MAXN];
+vector<int> installed;
+int id(const string &s)
+{
+    if(name2id.count(s)) return name2id[s];
+    else
+	{
+        int d=name2id.size();
+        name2id[s]=d;
+        id2name[d]=s;
+        return d;
+    }
+}
+inline string& name(const int &id) {return id2name[id];}
+inline bool needed(const int &item)
+{
+    for(int i=0;i!=depended[item].size();++i)
+		if(status[depended[item][i]]) return true;
+    return false;
+}
+inline void ins(const int &item, const bool &toplevel)
+{
+    if(!status[item])
+	{
+        for(int i=0;i!=depend[item].size();++i)
+			ins(depend[item][i], false);
+        cout<<"   Installing "<<name(item)<<'\n';
+        status[item]=toplevel?1:2;
+        installed.push_back(item);
+    }
+	else if(toplevel)
+		cout<<"   "<<name(item)<<" is already installed."<<'\n';
+}
+inline void del(const int &item, const bool &toplevel)
+{
+    if(toplevel && !status[item])
+		cout<<"   "<<name(item)<<" is not installed."<<'\n';
+    else if(toplevel && needed(item))
+		cout<<"   "<<name(item)<<" is still needed."<<'\n';
+    else if((toplevel||status[item]==2)&&!needed(item))
+	{
+        status[item]=0;
+		installed.erase(find(installed.begin(),installed.end(),item));
+		cout<<"   Removing "<<name(item)<<endl;
+		for(int i=0;i<depend[item].size();i++)
+			del(depend[item][i],false);
+    }
+}
+inline void List()
+{
+	for(int i=0;i!=installed.size();++i)
+		cout<<"   "<<name(installed[i])<<'\n';
+}
+inline void setdepend(istringstream &ss)
+{
+    string s1,s2;
+    ss>>s1;
+    int id1=id(s1);
+    while(ss>>s2)
+	{
+        int id2=id(s2);
+        depend[id1].push_back(id2);
+        depended[id2].push_back(id1);
+    }
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+    ios::sync_with_stdio(false);
+    string cmd;
+    while(getline(cin,cmd))
+	{
+        cout<<cmd<<endl;
+        istringstream line(cmd);
+        line>>cmd;
+        if(cmd=="END") break;
+        if(cmd[0]=='L') List();
+        else if(cmd[0]=='D') setdepend(line);
+        else if(cmd[0]=='I')
+		{
+            string s;
+            line>>s;
+            ins(id(s),true);
+        }
+        else if(cmd[0]='R')
+		{
+            string s;
+            line>>s;
+            del(id(s),true);
+        }
+    }
+    return 0;
+}