Submission #1027186

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027186		vjudge1	Sure Bet (CEOI17_sure)	C++17	100 / 100	74 ms	5460 KiB

sure

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define eb emplace_back
#define pu push
#define ins insert
#define bruh ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ff(x,a,b,c) for (auto x=a;x<=b;x+=c)
#define fd(x,a,b,c) for (auto x=a;x>=b;x-=c)
#define fi first
#define se second
#define int ll

using namespace std;
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());

typedef pair<int, int> ii;
const int N = 1e5+5;
const int mod = 1e9+7;
const int INF = 1e18;
using cd = complex<double>;
const long double PI = acos(-1);
int power(int a,int b) {ll x = 1;if (a >= mod) a%=mod; while (b) {if (b & 1) x = x*a % mod;a = a*a % mod;b>>=1;}return x;} 

int n;
long double a[N],b[N];
long double suma = 0.0,sumb = 0.0,ans = 0.0;
bool checka[N],checkb[N];

void solve()
{
	cin>>n;
    for (int i=1;i<=n;i++) cin>>a[i]>>b[i];
    sort(a+1,a+n+1,greater<long double>()); sort(b+1,b+n+1, greater<long double>());
    long double i = 1.0,j = 1.0;
    while (i<=n && j<=n)
    {
        if (!checka[(int)i]) suma += a[(int)i];
        if (!checkb[(int)j]) sumb += b[(int)j];
        checka[(int)i] = true,checkb[(int)j] = true;
        ans = max(ans,min((suma-(i+j)),(sumb-(i+j))));
        if (suma>=sumb) j++;
        if (suma<=sumb) i++;
    }
    cout<<fixed<<setprecision(4)<<ans;
}

signed main()
{
	bruh
	//freopen("input.inp","r",stdin);
	//freopen("output.inp","w",stdout);
	int t = 1;
	//cin>>t;
	while (t--)
	{
		solve();
		cout<<"\n";
	}
}

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