| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 986936 |
2024-05-21T15:26:03 Z |
Alebn |
Sure Bet (CEOI17_sure) |
C++14 |
|
154 ms |
3664 KB |
#include <bits/stdc++.h>
using namespace std;
int n;
vector<double> a, b;
bool srt(double x, double y) {
if(x == 0) return true;
if(y == 0) return false;
return x > y;
}
int main() {
cin >> n;
a = vector<double>(n + 1), b = vector<double>(n + 1);
for(int i = 1; i <= n; i++) cin >> a[i] >> b[i];
sort(a.begin(), a.end(), srt);
sort(b.begin(), b.end(), srt);
for(int i = 1; i <= n; i++) {
a[i] += a[i - 1];
b[i] += b[i - 1];
}
//
double res = 0;
for(int i = 0; i <= n; i++) {
int l = 0, r = n + 1, mid, ans;
while(l<=r) {
mid = (l + r) / 2;
if(b[mid] <= a[i]) {
ans = mid;
l = mid + 1;
} else r = mid - 1;
}
res = max(res, min(a[i], b[ans]) - i - ans);
if(a[i] != b[ans] && ans != n) res = max(res, min(a[i], b[ans + 1]) - i - ans - 1);
//cout << i << " " << ans << " " << res << "\n";
}
for(int i = 0; i <= n; i++) {
int l = 0, r = n + 1, mid, ans;
while(l<=r) {
mid = (l + r) / 2;
if(a[mid] <= b[i]) {
ans = mid;
l = mid + 1;
} else r = mid - 1;
}
res = max(res, min(b[i], a[ans]) - i - ans);
if(b[i] != a[ans] && ans != n) res = max(res, min(b[i], a[ans + 1]) - i - ans - 1);
//cout << i << " " << ans << " " << res << "\n";
}
cout << fixed << setprecision(4) << res << "\n";
}
Compilation message
sure.cpp: In function 'int main()':
sure.cpp:49:27: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
49 | if(b[i] != a[ans] && ans != n) res = max(res, min(b[i], a[ans + 1]) - i - ans - 1);
sure.cpp:36:27: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
36 | if(a[i] != b[ans] && ans != n) res = max(res, min(a[i], b[ans + 1]) - i - ans - 1);
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| 7 |
Correct |
1 ms |
348 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
344 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
2 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| 16 |
Correct |
2 ms |
348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| 7 |
Correct |
1 ms |
348 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
344 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
2 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| 16 |
Correct |
2 ms |
348 KB |
Output is correct |
| 17 |
Correct |
119 ms |
3256 KB |
Output is correct |
| 18 |
Correct |
115 ms |
3256 KB |
Output is correct |
| 19 |
Correct |
132 ms |
3128 KB |
Output is correct |
| 20 |
Correct |
114 ms |
3152 KB |
Output is correct |
| 21 |
Correct |
154 ms |
3528 KB |
Output is correct |
| 22 |
Correct |
115 ms |
3140 KB |
Output is correct |
| 23 |
Correct |
120 ms |
3132 KB |
Output is correct |
| 24 |
Correct |
118 ms |
3160 KB |
Output is correct |
| 25 |
Correct |
114 ms |
3364 KB |
Output is correct |
| 26 |
Correct |
126 ms |
3664 KB |
Output is correct |
