#include <iostream>
#include <vector>
#include <bitset>
#include <queue>
#include <algorithm>
#include <cstring>
#include <cmath>
#include <stack>
#include <set>
#include <map>
#include <cassert>
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
#define ii pair<long long int, long long int>
#define pll pair<long long, long long>
#define fi first
#define se second
#define r first
#define c second
#define all(x) x.begin(), x.end()
#define mk(x, y) make_pair(x, y)
ostream& operator << (ostream& os, pair<int, int> a) {
return os << a.first << " : " << a.second;
}
#define endl '\n'
#define db(val) "["#val" = "<<(val)<<"] "
#define cntbit(x) __builtin_popcount(x)
const int N = 5e5 + 5;
const int iINF = 1e9;
const ll MOD = 1e9 + 7;
const ll MOD2 = 998244353;
const ll INF = 1e18;
int n;
ii a[N];
ll dp[N];
int main() {
ios_base::sync_with_stdio();
#ifdef CHUNGDINH
freopen("main.inp","r",stdin);
freopen("main.out","w",stderr);
#endif
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i].first >> a[i].second;
sort(a + 1, a + n + 1);
ll ff = -INF;
for (int i = 1; i <= n; i++) {
dp[i] = a[i].second;
dp[i] = max(dp[i], ff + a[i].second - a[i].first);
ff = max(ff, dp[i] + a[i].first);
}
cout << *max_element(dp + 1, dp + n + 1);
}
/*
Array bounds *
long long vs int
Garbage value
Sometimes, VNOI views "arrays out of bounds" as "wrong answer"
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
236 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
1 ms |
204 KB |
Output is correct |
| 23 |
Correct |
1 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
236 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
1 ms |
204 KB |
Output is correct |
| 23 |
Correct |
1 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
6 ms |
332 KB |
Output is correct |
| 28 |
Correct |
6 ms |
332 KB |
Output is correct |
| 29 |
Correct |
6 ms |
332 KB |
Output is correct |
| 30 |
Correct |
6 ms |
336 KB |
Output is correct |
| 31 |
Correct |
6 ms |
332 KB |
Output is correct |
| 32 |
Correct |
6 ms |
332 KB |
Output is correct |
| 33 |
Correct |
6 ms |
388 KB |
Output is correct |
| 34 |
Correct |
6 ms |
372 KB |
Output is correct |
| 35 |
Correct |
6 ms |
332 KB |
Output is correct |
| 36 |
Correct |
6 ms |
352 KB |
Output is correct |
| 37 |
Correct |
6 ms |
332 KB |
Output is correct |
| 38 |
Correct |
6 ms |
344 KB |
Output is correct |
| 39 |
Correct |
6 ms |
332 KB |
Output is correct |
| 40 |
Correct |
6 ms |
332 KB |
Output is correct |
| 41 |
Correct |
6 ms |
332 KB |
Output is correct |
| 42 |
Correct |
6 ms |
344 KB |
Output is correct |
| 43 |
Correct |
6 ms |
364 KB |
Output is correct |
| 44 |
Correct |
6 ms |
332 KB |
Output is correct |
| 45 |
Correct |
6 ms |
332 KB |
Output is correct |
| 46 |
Correct |
7 ms |
332 KB |
Output is correct |
| 47 |
Correct |
6 ms |
332 KB |
Output is correct |
| 48 |
Correct |
6 ms |
336 KB |
Output is correct |
| 49 |
Correct |
6 ms |
368 KB |
Output is correct |
| 50 |
Correct |
6 ms |
332 KB |
Output is correct |
| 51 |
Correct |
6 ms |
380 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
236 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
1 ms |
204 KB |
Output is correct |
| 23 |
Correct |
1 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
6 ms |
332 KB |
Output is correct |
| 28 |
Correct |
6 ms |
332 KB |
Output is correct |
| 29 |
Correct |
6 ms |
332 KB |
Output is correct |
| 30 |
Correct |
6 ms |
336 KB |
Output is correct |
| 31 |
Correct |
6 ms |
332 KB |
Output is correct |
| 32 |
Correct |
6 ms |
332 KB |
Output is correct |
| 33 |
Correct |
6 ms |
388 KB |
Output is correct |
| 34 |
Correct |
6 ms |
372 KB |
Output is correct |
| 35 |
Correct |
6 ms |
332 KB |
Output is correct |
| 36 |
Correct |
6 ms |
352 KB |
Output is correct |
| 37 |
Correct |
6 ms |
332 KB |
Output is correct |
| 38 |
Correct |
6 ms |
344 KB |
Output is correct |
| 39 |
Correct |
6 ms |
332 KB |
Output is correct |
| 40 |
Correct |
6 ms |
332 KB |
Output is correct |
| 41 |
Correct |
6 ms |
332 KB |
Output is correct |
| 42 |
Correct |
6 ms |
344 KB |
Output is correct |
| 43 |
Correct |
6 ms |
364 KB |
Output is correct |
| 44 |
Correct |
6 ms |
332 KB |
Output is correct |
| 45 |
Correct |
6 ms |
332 KB |
Output is correct |
| 46 |
Correct |
7 ms |
332 KB |
Output is correct |
| 47 |
Correct |
6 ms |
332 KB |
Output is correct |
| 48 |
Correct |
6 ms |
336 KB |
Output is correct |
| 49 |
Correct |
6 ms |
368 KB |
Output is correct |
| 50 |
Correct |
6 ms |
332 KB |
Output is correct |
| 51 |
Correct |
6 ms |
380 KB |
Output is correct |
| 52 |
Correct |
574 ms |
12044 KB |
Output is correct |
| 53 |
Correct |
566 ms |
11900 KB |
Output is correct |
| 54 |
Correct |
570 ms |
11896 KB |
Output is correct |
| 55 |
Correct |
564 ms |
12080 KB |
Output is correct |
| 56 |
Correct |
558 ms |
11928 KB |
Output is correct |
| 57 |
Correct |
556 ms |
11972 KB |
Output is correct |
| 58 |
Correct |
604 ms |
12004 KB |
Output is correct |
| 59 |
Correct |
561 ms |
11972 KB |
Output is correct |
| 60 |
Correct |
560 ms |
11972 KB |
Output is correct |
| 61 |
Correct |
568 ms |
12100 KB |
Output is correct |
| 62 |
Correct |
561 ms |
12000 KB |
Output is correct |
| 63 |
Correct |
575 ms |
11972 KB |
Output is correct |
| 64 |
Correct |
593 ms |
12032 KB |
Output is correct |
| 65 |
Correct |
585 ms |
11976 KB |
Output is correct |
| 66 |
Correct |
560 ms |
11972 KB |
Output is correct |
| 67 |
Correct |
563 ms |
12052 KB |
Output is correct |
| 68 |
Correct |
561 ms |
11948 KB |
Output is correct |
