delete pics to save space

2.1329.cpp

@@ -0,0 +1,50 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+const int maxn=20010;
+int pa[maxn],d[maxn];
+int ff(int x)
+{
+	if(pa[x]!=x)
+	{
+		int root=ff(pa[x]);
+		d[x]+=d[pa[x]];
+		return pa[x]=root;
+	}
+	else return x;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	int T;
+	scanf("%d",&T);
+	while(T-->0)
+	{
+		int n,u,v;
+		char cmd[10];
+		scanf("%d",&n);
+		for(int i=1;i<=n;i++)
+		{
+			pa[i]=i;
+			d[i]=0;
+		}
+		while(scanf("%s",cmd)==1&&cmd[0]!='O')
+		{
+			if(cmd[0]=='E')
+			{
+				scanf("%d",&u);
+				ff(u);
+				printf("%d\n",d[u]);
+			}
+			if(cmd[0]=='I')
+			{
+				scanf("%d%d",&u,&v);
+				pa[u]=v;
+				d[u]=abs(u-v)%1000;
+			}
+		}
+	}
+	return 0;
+}