delete pics to save space

1.5057.cpp

@@ -0,0 +1,34 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+int n,m,c[100005];
+void upd(int p,int v)
+{
+	for(;p<=n;p+=(p&-p)) c[p]^=v;
+}
+int qry(int p)
+{
+	int v=0;
+	for(;p;p-=(p&-p)) v^=c[p];
+	return v;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&m);
+	while(m-->0)
+	{
+		int op,l,r; scanf("%d%d",&op,&l);
+		if(op==1)
+		{
+			scanf("%d",&r);
+			upd(l,1);
+			upd(r+1,1);
+		}
+		else printf("%d\n",qry(l));
+	}
+	return 0;
+}