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Submission #582532

# Submission time Handle Problem Language Result Execution time Memory
582532 2022-06-24T04:04:15 Z silv723 Boarding Passes (BOI22_passes) C++17
0 / 100
 0 ms 212 KB 
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
ll f(ll n){
  if(n%2) return ((n-1)/2)*((n-1)/2);
  else return n/2*(n/2-1);
}
int main(){
  string s;
  cin>>s;
  ll n=s.size();
  double ans=0;
  for(ll i=3;i<=n;i++){
    ans+=(double)f(i)/(double)i;
  }
  cout<<setprecision(20)<<ans<<endl;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -