//#pragma optimize("Ofast")
//#pragma optimize("unroll-loops")
//#pragma traget("avx,avx2")
#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstdint>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <random>
#include <deque>
#include <functional>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <complex>
#include <numeric>
#include <cassert>
#include <array>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <thread>
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#define el '\n'
#define ff first
#define ss second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define point pair <ll, ll>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
using namespace std;
#include <random>
mt19937 rnd(time(0));
const ll INF = 1e18 + 10;
const ll inf = 1e9 + 10;
const ll maxn = 5e5 + 10;
const ll mod = 1e9 + 7;
const ll K = 7e6 + 100;
const ll LOG = 20;
ll a[maxn], b[maxn], pref[maxn];
void solve() {
ll n;
cin >> n;
for (ll i = 1; i <= n; i++)
cin >> a[i] >> b[i];
for (ll i = 1; i <= n; i++)
pref[i] = pref[i - 1] + a[i] - b[i];
priority_queue <ll> pq;
ll ans = 0;
for (ll i = 1; i <= n; i++) {
if (pref[i] < 0) {
ans += abs(pref[i]);
pref[i] = 0;
} else if (pref[i] > pref[n]) {
ans += pref[i] - pref[n];
pref[i] = pref[n];
}
pq.push(pref[i]);
pq.push(pref[i]);
ans += pq.top() - pref[i];
pq.pop();
}
cout << ans << el;
return;
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int tests = 1;
//cin >> tests;
while (tests--)
solve();
return 0;
}
/*
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
7 ms |
9692 KB |
Output is correct |
5 |
Correct |
14 ms |
12508 KB |
Output is correct |
6 |
Correct |
38 ms |
16464 KB |
Output is correct |
7 |
Correct |
83 ms |
24524 KB |
Output is correct |
8 |
Correct |
77 ms |
23244 KB |
Output is correct |
9 |
Correct |
67 ms |
21664 KB |
Output is correct |
10 |
Correct |
56 ms |
19660 KB |
Output is correct |
11 |
Correct |
56 ms |
20224 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
7 ms |
9692 KB |
Output is correct |
5 |
Correct |
14 ms |
12508 KB |
Output is correct |
6 |
Correct |
38 ms |
16464 KB |
Output is correct |
7 |
Correct |
83 ms |
24524 KB |
Output is correct |
8 |
Correct |
77 ms |
23244 KB |
Output is correct |
9 |
Correct |
67 ms |
21664 KB |
Output is correct |
10 |
Correct |
56 ms |
19660 KB |
Output is correct |
11 |
Correct |
56 ms |
20224 KB |
Output is correct |
12 |
Correct |
21 ms |
13524 KB |
Output is correct |
13 |
Correct |
52 ms |
20800 KB |
Output is correct |
14 |
Correct |
84 ms |
23376 KB |
Output is correct |
15 |
Correct |
71 ms |
22476 KB |
Output is correct |
16 |
Correct |
63 ms |
20936 KB |
Output is correct |
17 |
Correct |
62 ms |
18632 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4440 KB |
Output is correct |
7 |
Correct |
1 ms |
4592 KB |
Output is correct |
8 |
Correct |
1 ms |
4440 KB |
Output is correct |
9 |
Correct |
1 ms |
4440 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4440 KB |
Output is correct |
7 |
Correct |
1 ms |
4592 KB |
Output is correct |
8 |
Correct |
1 ms |
4440 KB |
Output is correct |
9 |
Correct |
1 ms |
4440 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4444 KB |
Output is correct |
12 |
Correct |
1 ms |
4440 KB |
Output is correct |
13 |
Correct |
2 ms |
4700 KB |
Output is correct |
14 |
Correct |
1 ms |
4444 KB |
Output is correct |
15 |
Correct |
2 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
4576 KB |
Output is correct |
18 |
Correct |
1 ms |
4700 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4440 KB |
Output is correct |
7 |
Correct |
1 ms |
4592 KB |
Output is correct |
8 |
Correct |
1 ms |
4440 KB |
Output is correct |
9 |
Correct |
1 ms |
4440 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
7 ms |
9692 KB |
Output is correct |
12 |
Correct |
14 ms |
12508 KB |
Output is correct |
13 |
Correct |
38 ms |
16464 KB |
Output is correct |
14 |
Correct |
83 ms |
24524 KB |
Output is correct |
15 |
Correct |
77 ms |
23244 KB |
Output is correct |
16 |
Correct |
67 ms |
21664 KB |
Output is correct |
17 |
Correct |
56 ms |
19660 KB |
Output is correct |
18 |
Correct |
56 ms |
20224 KB |
Output is correct |
19 |
Correct |
21 ms |
13524 KB |
Output is correct |
20 |
Correct |
52 ms |
20800 KB |
Output is correct |
21 |
Correct |
84 ms |
23376 KB |
Output is correct |
22 |
Correct |
71 ms |
22476 KB |
Output is correct |
23 |
Correct |
63 ms |
20936 KB |
Output is correct |
24 |
Correct |
62 ms |
18632 KB |
Output is correct |
25 |
Correct |
1 ms |
4440 KB |
Output is correct |
26 |
Correct |
2 ms |
4700 KB |
Output is correct |
27 |
Correct |
1 ms |
4444 KB |
Output is correct |
28 |
Correct |
2 ms |
4444 KB |
Output is correct |
29 |
Correct |
1 ms |
4444 KB |
Output is correct |
30 |
Correct |
1 ms |
4576 KB |
Output is correct |
31 |
Correct |
1 ms |
4700 KB |
Output is correct |
32 |
Correct |
1 ms |
4444 KB |
Output is correct |
33 |
Correct |
29 ms |
13532 KB |
Output is correct |
34 |
Correct |
63 ms |
21192 KB |
Output is correct |
35 |
Correct |
107 ms |
24264 KB |
Output is correct |
36 |
Correct |
97 ms |
22472 KB |
Output is correct |
37 |
Correct |
83 ms |
23240 KB |
Output is correct |
38 |
Correct |
101 ms |
23496 KB |
Output is correct |
39 |
Correct |
65 ms |
19400 KB |
Output is correct |
40 |
Correct |
71 ms |
20156 KB |
Output is correct |
41 |
Correct |
63 ms |
19144 KB |
Output is correct |
42 |
Correct |
72 ms |
18636 KB |
Output is correct |
43 |
Correct |
66 ms |
19912 KB |
Output is correct |
44 |
Correct |
68 ms |
18640 KB |
Output is correct |
45 |
Correct |
88 ms |
25040 KB |
Output is correct |
46 |
Correct |
87 ms |
20080 KB |
Output is correct |
47 |
Correct |
70 ms |
18380 KB |
Output is correct |