Submission #1110121

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110121		sofija6	Sure Bet (CEOI17_sure)	C++14	60 / 100	85 ms	4920 KiB

sure

#include <bits/stdc++.h>
#define ll long long
#define MAXN 100010
using namespace std;
double a[MAXN],b[MAXN];
bool Cmp(double x,double y)
{
    return x>=y;
}
int main()
{
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n;
    cin >> n;
    for (ll i=1;i<=n;i++)
    {
        cin >> a[i] >> b[i];
        a[i]-=1;
        b[i]-=1;
    }
    sort(a+1,a+1+n,Cmp);
    sort(b+1,b+1+n,Cmp);
    double cura=0,curb=0,ans=0;
    ll posb=1;
    for (ll i=1;i<=n;i++)
    {
        cura+=a[i];
        curb--;
        while (posb<=n && min(cura-1,curb+b[posb])>=min(cura,curb))
        {
            curb+=b[posb];
            cura--;
            posb++;
        }
        ans=max(ans,min(cura,curb));
    }
    cout << fixed << setprecision(4) << ans;
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 40 / 40
• Subtask 3: 0 / 40