delete pics to save space

1.1223.cpp

@@ -0,0 +1,22 @@
+// luogu-judger-enable-o2
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+struct node { int ti,id; };
+inline bool operator<(const node a,const node b) { return a.ti<b.ti; }
+node p[1005];
+int n;
+double s=0.0;
+int main()
+{
+    scanf("%d",&n);
+    for(int i=0;i<n;i++) scanf("%d",&p[i].ti),p[i].id=i+1;
+    sort(p,p+n);
+    for(int i=0;i<n;i++)
+    {
+        printf("%d ",p[i].id);
+        s+=p[i].ti*(n-i-1);
+    }
+    printf("\n%.2lf\n",s/n);
+    return 0;
+}