Submission #108763

#	Time	Username	Problem	Language	Result	Execution time	Memory
108763		MAMBA	Sure Bet (CEOI17_sure)	C++17	100 / 100	126 ms	3672 KiB

sure

#include <bits/stdc++.h>

using namespace std;

#define rep(i , j , k) for(int i = j; i < k; i++)
#define pb push_back

typedef long long ll;
typedef pair<int , int> pii;
typedef vector<int> vi;

template<typename S, typename T> 
inline bool smin(S &l, T r) { return l < r ? 0 : (l = r, 1); }
template<typename S, typename T> 
inline bool smax(S &l, T r) { return r < l ? 0 : (l = r, 1); }


constexpr int N = 1e5 + 10;

int n, l, r;
double A, B, a[N], b[N], res;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	cin >> n;
	rep(i , 0 , n) 
		cin >> a[i] >> b[i];

	sort(a , a + n, greater<double>());
	sort(b , b + n, greater<double>());

	while (l < n || r < n) {
		if ((A < B && l < n) || r == n) 
			A += a[l++];
		else 
			B += b[r++];
		A--;
		B--;
		smax(res , min(A , B));
	}

	cout << fixed << setprecision(4) << res << endl;

	return 0;
}

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