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Submission #256664

# Submission time Handle Problem Language Result Execution time Memory
256664 2020-08-03T05:54:27 Z ChrisT Sure Bet (CEOI17_sure) C++17
100 / 100
 75 ms 3576 KB 
#include<bits/stdc++.h>
using namespace std;
int main () {
	int n;
	scanf ("%d",&n);
	vector<double> a(n),b(n);
	for (int i = 0; i < n; i++) scanf ("%lf %lf",&a[i],&b[i]);
	sort(a.rbegin(),a.rend()); sort(b.rbegin(),b.rend());
	int bp = 0; double ret = 0, asum = 0, bsum = 0; int cnt = 0;
	for (int i = 0; i < n; i++) {
		asum += a[i]; ++cnt;
		while (bp < n && min(asum,bsum + b[bp]) - 1 >= min(asum,bsum)) {
			bsum += b[bp++]; ++cnt;
		}
		ret = max(ret,min(asum,bsum) - cnt);
	}
	printf ("%.4f\n",ret);
	return 0;
}

Compilation message

sure.cpp: In function 'int main()':
sure.cpp:5:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d",&n);
  ~~~~~~^~~~~~~~~
sure.cpp:7:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 0; i < n; i++) scanf ("%lf %lf",&a[i],&b[i]);
                              ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 68 ms 3320 KB Output is correct
18 Correct 68 ms 3192 KB Output is correct
19 Correct 69 ms 3352 KB Output is correct
20 Correct 69 ms 3192 KB Output is correct
21 Correct 75 ms 3576 KB Output is correct
22 Correct 66 ms 3192 KB Output is correct
23 Correct 69 ms 3320 KB Output is correct
24 Correct 68 ms 3192 KB Output is correct
25 Correct 67 ms 3212 KB Output is correct
26 Correct 72 ms 3576 KB Output is correct