#include <bits/stdc++.h>
#define int long long
using namespace std;
const int NMAX = 5e5 + 5;
int N, pref_sum[NMAX], lg2[NMAX], rmq_max[NMAX][20], ans;
pair<int,int> a[NMAX];
void compute_lg2() {
lg2[1] = 0;
for(int i = 2; i <= N; ++i)
lg2[i] = lg2[i >> 1] + 1;
}
void compute_rmq() {
for(int i = 1; i <= N; ++i)
rmq_max[i][0] = pref_sum[i] - a[i].first;
for(int j = 1; (1 << j) <= N; ++j)
for(int i = 1; i + (1 << j) - 1 <= N; ++i)
rmq_max[i][j] = max(rmq_max[i][j - 1], rmq_max[i + (1 << (j - 1))][j - 1]);
}
int query_max(int l, int r) {
int k = lg2[r - l + 1];
int dif = (r - l + 1) - (1 << k);
return max(rmq_max[l][k], rmq_max[l + dif][k]);
}
int32_t main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
cin >> N;
for(int i = 1; i <= N; ++i)
cin >> a[i].first >> a[i].second;
sort(a + 1, a + N + 1);
for(int i = 1; i <= N; ++i)
pref_sum[i] = pref_sum[i - 1] + a[i].second;
compute_lg2();
compute_rmq();
for(int i = 1; i <= N; ++i) {
int best = a[i].first + query_max(i, N) - pref_sum[i - 1];
ans = max(ans, best);
}
cout << ans << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
512 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
404 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
512 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
404 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 28 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 29 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 30 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 31 |
Correct |
5 ms |
1388 KB |
Output is correct |
| 32 |
Correct |
4 ms |
1400 KB |
Output is correct |
| 33 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 34 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 35 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 36 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 37 |
Correct |
3 ms |
1416 KB |
Output is correct |
| 38 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 39 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 40 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 41 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 42 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 43 |
Correct |
4 ms |
1516 KB |
Output is correct |
| 44 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 45 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 46 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 47 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 48 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 49 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 50 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 51 |
Correct |
4 ms |
1388 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
512 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
404 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 28 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 29 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 30 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 31 |
Correct |
5 ms |
1388 KB |
Output is correct |
| 32 |
Correct |
4 ms |
1400 KB |
Output is correct |
| 33 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 34 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 35 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 36 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 37 |
Correct |
3 ms |
1416 KB |
Output is correct |
| 38 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 39 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 40 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 41 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 42 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 43 |
Correct |
4 ms |
1516 KB |
Output is correct |
| 44 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 45 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 46 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 47 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 48 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 49 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 50 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 51 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 52 |
Correct |
363 ms |
107008 KB |
Output is correct |
| 53 |
Correct |
365 ms |
106988 KB |
Output is correct |
| 54 |
Correct |
360 ms |
106988 KB |
Output is correct |
| 55 |
Correct |
359 ms |
106988 KB |
Output is correct |
| 56 |
Correct |
367 ms |
106988 KB |
Output is correct |
| 57 |
Correct |
397 ms |
107016 KB |
Output is correct |
| 58 |
Correct |
364 ms |
107244 KB |
Output is correct |
| 59 |
Correct |
362 ms |
106988 KB |
Output is correct |
| 60 |
Correct |
359 ms |
107016 KB |
Output is correct |
| 61 |
Correct |
361 ms |
106860 KB |
Output is correct |
| 62 |
Correct |
353 ms |
106900 KB |
Output is correct |
| 63 |
Correct |
361 ms |
106988 KB |
Output is correct |
| 64 |
Correct |
362 ms |
107244 KB |
Output is correct |
| 65 |
Correct |
363 ms |
106988 KB |
Output is correct |
| 66 |
Correct |
365 ms |
106988 KB |
Output is correct |
| 67 |
Correct |
360 ms |
106988 KB |
Output is correct |
| 68 |
Correct |
358 ms |
106988 KB |
Output is correct |
