Submission #1205815

#	Time	Username	Problem	Language	Result	Execution time	Memory
1205815		lighton	Boarding Passes (BOI22_passes)	C++17	0 / 100	0 ms	324 KiB

passes

#include<bits/stdc++.h>
#define pb push_back
#define all(v) v.begin(),v.end()
#define forf(i,s,e) for(int i = s; i<=e; i++)
#define forb(i,s,e) for(int i = s; i>=e; i--)
#define idx(i,v) lower_bound(all(v),i)-v.begin()
#define comp(v) v.erase(unique(all(v)),v.end())
#define sz(v) (int)v.size()
#define fs first
#define se second
#define SP << " " <<
#define LN << "\n"
#define IO cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(false);
using namespace std;
typedef long long ll;
ll inf = 1e18;

int N; string S;
int main(){
    cin>>S; N = sz(S);
    double ans = 0;
    forf(i,0,N-1){
        ans += ((double)min(i,N-1-i)) / 2;
    }
    cout<<ans;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 25
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40