Submission #573326

#	Time	Username	Problem	Language	Result	Execution time	Memory
573326		AmirElarbi	Boarding Passes (BOI22_passes)	C++14	0 / 100	2 ms	340 KiB

passes

#include <bits/stdc++.h>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#define ii pair<int,int>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF 1e9+7
#define eps 1e-7
#define eps1 1e-2
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MAX_A 2e5+5
using namespace std;
const int MOD = 1e4+7;
const int nax = 4e5+5;
typedef complex<int> Point;
#define X real()
#define Y imag()
int main(){
    optimise;
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    string s;
    cin >> s;
    int n = s.size();
    double mn = INF;
    for (int i = 0; i < n; ++i)
    {
        double nb1 = i, nb2 = n-i;
        double cur = (double)(nb1*(nb1-1) + nb2*(nb2-1))/(double)(4.);
        mn = min(mn, cur);
    }
    cout  << mn << endl;
}

Compilation message (stderr)

passes.cpp: In function 'int main()':
passes.cpp:29:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
passes.cpp:30:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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