| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 545915 |
2022-04-05T16:09:31 Z |
rainboy |
Sure Bet (CEOI17_sure) |
C |
|
101 ms |
3568 KB |
#include <stdio.h>
#define N 100000
double min(double a, double b) { return a < b ? a : b; }
double max(double a, double b) { return a > b ? a : b; }
unsigned int X = 12345;
int rand_() {
return (X *= 3) >> 1;
}
void sort(double *aa, int l, int r) {
while (l < r) {
int i = l, j = l, k = r;
double a = aa[l + rand_() % (r - l)], tmp;
while (j < k)
if (aa[j] == a)
j++;
else if (aa[j] > a) {
tmp = aa[i], aa[i] = aa[j], aa[j] = tmp;
i++, j++;
} else {
k--;
tmp = aa[j], aa[j] = aa[k], aa[k] = tmp;
}
sort(aa, l, i);
l = k;
}
}
int main() {
static double aa[N], bb[N];
int n, i, j;
double sum1, sum2, ans;
scanf("%d", &n);
for (i = 0; i < n; i++)
scanf("%lf%lf", &aa[i], &bb[i]);
sort(aa, 0, n);
sort(bb, 0, n);
sum1 = sum2 = 0, ans = 0, i = 0, j = 0;
while (i < n || j < n) {
if (i < n && (j == n || sum1 <= sum2))
sum1 += aa[i++];
else
sum2 += bb[j++];
ans = max(ans, min(sum1, sum2) - i - j);
}
printf("%.4f\n", ans);
return 0;
}
Compilation message
sure.c: In function 'main':
sure.c:39:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
39 | scanf("%d", &n);
| ^~~~~~~~~~~~~~~
sure.c:41:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
41 | scanf("%lf%lf", &aa[i], &bb[i]);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
296 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
296 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
300 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
296 KB |
Output is correct |
| 12 |
Correct |
1 ms |
312 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
2 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
296 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
300 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
296 KB |
Output is correct |
| 12 |
Correct |
1 ms |
312 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
2 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
78 ms |
3148 KB |
Output is correct |
| 18 |
Correct |
73 ms |
3152 KB |
Output is correct |
| 19 |
Correct |
84 ms |
3136 KB |
Output is correct |
| 20 |
Correct |
75 ms |
3200 KB |
Output is correct |
| 21 |
Correct |
101 ms |
3564 KB |
Output is correct |
| 22 |
Correct |
74 ms |
3200 KB |
Output is correct |
| 23 |
Correct |
73 ms |
3196 KB |
Output is correct |
| 24 |
Correct |
78 ms |
3144 KB |
Output is correct |
| 25 |
Correct |
75 ms |
3080 KB |
Output is correct |
| 26 |
Correct |
83 ms |
3568 KB |
Output is correct |
