Submission #98925

#	Time	Username	Problem	Language	Result	Execution time	Memory
98925		arman_ferdous	Sure Bet (CEOI17_sure)	C++17	100 / 100	94 ms	3684 KiB

sure

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

const int N = 1e5+10;
int n; double a[N], b[N];

int main() {
	scanf("%d", &n);
	for(int i = 0; i < n; i++)
		scanf("%lf %lf", &a[i], &b[i]);
	sort(a,a+n); sort(b,b+n);

	int p1 = n-1, p2 = n-1;
	double ans = 0, A = 0, B = 0;
	for(int i = 1; i <= (n<<1); i++) {
		if(p1 < 0) B += b[p2--];
		else if(p2 < 0) A += a[p1--];
		else if(B > A) A += a[p1--];
		else B += b[p2--];
		ans = max(ans, min(A - i, B - i));
	} printf("%.4lf\n", ans);
	return 0;
}

Compilation message (stderr)

sure.cpp: In function 'int main()':
sure.cpp:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
sure.cpp:10:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lf %lf", &a[i], &b[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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