delete pics to save space

2.10410.cpp

@@ -0,0 +1,40 @@
+// Rey
+#include<bits/stdc++.h>
+using namespace std;
+const int maxn = 1000+5;
+vector<int> G[maxn];
+int pos[maxn];
+int main()
+{
+   int n;
+   int t;
+   while(scanf("%d",&n)==1&&n)
+   {
+      for(int i = 1; i <= n; i++)
+         scanf("%d",&t), pos[t] = i, G[i].clear();
+      int root;
+      scanf("%d",&root);
+      stack<int> sta;
+      sta.push(root);
+      for(int i = 1; i < n; i++){
+         scanf("%d",&t);
+         for(;;) {
+            int u = sta.top();if( pos[u]+1 < pos[t] ||  (pos[u]+1 == pos[t] && u > t) || u == root  ) {
+               G[u].push_back(t);
+               sta.push(t);
+               break;
+            }else {
+               sta.pop();
+            }
+         }
+
+      }
+      for(int i = 1; i <= n; i++) {
+         printf("%d:",i);
+         for(int j = 0, sz =  G[i].size(); j < sz; j++)
+            printf(" %d",G[i][j]);
+         puts("");
+      }
+   }
+   return 0;
+}