Wa in some test cases

#1

why it is showing wrong ans in test case 3 and 4 but showing correct in all other cases

#2

Please send your code link.

#3

#include<bits/stdc++.h> using namespace std; #define ll long long int #define f(i,n) for(i=0;i<n;i++) #define f1(i,n) for(i=1;i<=n;i++) int unique(vectorv,vector&dp){ int i; int sz=v.size(); map<int,int>prevind; f1(i,sz-1){ prevind[v[i]]=0; } dp[1]=1; prevind[v[1]]=1; f1(i,sz-1){ dp[i+1]=dp[i]+(i+1-prevind[v[i+1]]); prevind[v[i+1]]=i+1; } int sum=0; f1(i,sz-1) sum+=dp[i]; return sum; } main(){ int n; cin>>n; int i; vectorv(n+1); vectordp(n+1); f1(i,n) cin>>v[i]; float ans=unique(v,dp); ans=float(2ans-n)/(nn); cout<<fixed<<setprecision(6)<<ans; }

#4

Please don’t send raw code.
Paste your code on ide.codingblocks.com and then after saving send the generated link.

#5

As I did not get any respond from your side, I am closing this thread.

#6

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