Submission #559860

#	Time	Username	Problem	Language	Result	Execution time	Memory
559860		GioChkhaidze	Sure Bet (CEOI17_sure)	C++14	100 / 100	84 ms	3552 KiB

sure

#include <bits/stdc++.h>
using namespace std;
double a[100005], b[100005];
main () {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL), cout.tie(NULL);
	int n;
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		cin >> a[i] >> b[i]; 
	}
	sort(a + 1, a + n + 1);
	sort(b + 1, b + n + 1);
	reverse(a + 1, a + n + 1);
	reverse(b + 1, b + n + 1);
	int aid = 0, bid = 0;
	double ans = 0, Sa = 0, Sb = 0;
	while (true) {
		if (aid + 1 <= n && (bid == n || Sa <= Sb))
			Sa += a[++aid];
				else
		if (bid + 1 <= n && (aid == n || Sb <= Sa)) 
			Sb += b[++bid];
		ans = max(ans, min(Sa, Sb) - (aid + bid));
		if (aid == n && bid == n) break;
	}
	printf("%.4f\n", ans);
}

Compilation message (stderr)

sure.cpp:4:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main () {
      | ^~~~

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