Submission #681492

#	Time	Username	Problem	Language	Result	Execution time	Memory
681492		vjudge1	Sure Bet (CEOI17_sure)	C++14	100 / 100	75 ms	3540 KiB

sure

#include <bits/stdc++.h>
using namespace std;

#define F first
#define S second
#define pb push_back
#define all(a) a.begin(), a.end()

typedef long long ll;
typedef pair<int, int> ii;
typedef pair<double, double> pdd;

void print() {cerr << '\n';} template <typename T1, typename... T2>
void print(const T1 &a, const T2 &...b) { cerr << a << ' ', print(b...); }

const int N = 1e5 + 5;
const int mod = 1e9 + 7;

double a[N], b[N];
double res = 0;
int n;

void solve()
{
    cin >> n;
    for(int i = 1; i <= n; i++)
        cin >> a[i] >> b[i];
        
    sort(a + 1, a + 1 + n, greater<double>());
    sort(b + 1, b + 1 + n, greater<double>());
    
    int i = 0, j = 0;
    double sa = 0, sb = 0;
    while(true)
    {
        if(i > n && j > n) break;
        if(j > n)
            sa += a[++i];
        else if(i > n)
            sb += b[++j];
        else if(sa < sb)
            sa += a[++i];
        else
            sb += b[++j];
        res = max(res, min(sa, sb) - i - j);
    }
    cout << setprecision(4) << fixed << res;
}

signed main()
{
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    // cin >> t;
    while(t--) solve();
    return 0;
}

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