#pragma GCC target ("avx2")
#pragma GCC optimize ("O2")
#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(0)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define REP(n) FOR(O, 1, (n))
#define pb push_back
#define f first
#define s second
typedef long double ld;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<ll> vl;
typedef vector<piii> viii;
const int MAXN = 500100, MAXK = 30;
//const ll MOD = 998244353;
const ll INF = 4e18;
const ld PI = asin(1) * 2;
int n;
ll a[MAXN], b[MAXN], dif[MAXN], pref[MAXN];
ll dp[2][31000];
int main()
{
FAST_IO;
cin >> n;
FOR(i, 1, n) cin >> a[i] >> b[i];
FOR(i, 1, n) {
dif[i] = a[i]-b[i];
pref[i] = pref[i-1] + dif[i];
}
priority_queue<ll> q;
ll ans = 0;
FOR(i, 1, n) {
REP(2) q.push(max(0ll, pref[i]));
q.pop();
ans += abs(pref[i]);
}
while (!q.empty()) {
ans -= min(pref[n], q.top());
q.pop();
}
cout << ans << "\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
460 KB |
Output is correct |
3 |
Correct |
2 ms |
524 KB |
Output is correct |
4 |
Correct |
18 ms |
2944 KB |
Output is correct |
5 |
Correct |
37 ms |
5256 KB |
Output is correct |
6 |
Correct |
120 ms |
11216 KB |
Output is correct |
7 |
Correct |
179 ms |
21088 KB |
Output is correct |
8 |
Correct |
212 ms |
21136 KB |
Output is correct |
9 |
Correct |
178 ms |
20996 KB |
Output is correct |
10 |
Correct |
157 ms |
21104 KB |
Output is correct |
11 |
Correct |
164 ms |
21160 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
460 KB |
Output is correct |
3 |
Correct |
2 ms |
524 KB |
Output is correct |
4 |
Correct |
18 ms |
2944 KB |
Output is correct |
5 |
Correct |
37 ms |
5256 KB |
Output is correct |
6 |
Correct |
120 ms |
11216 KB |
Output is correct |
7 |
Correct |
179 ms |
21088 KB |
Output is correct |
8 |
Correct |
212 ms |
21136 KB |
Output is correct |
9 |
Correct |
178 ms |
20996 KB |
Output is correct |
10 |
Correct |
157 ms |
21104 KB |
Output is correct |
11 |
Correct |
164 ms |
21160 KB |
Output is correct |
12 |
Correct |
59 ms |
6312 KB |
Output is correct |
13 |
Correct |
160 ms |
14828 KB |
Output is correct |
14 |
Correct |
181 ms |
21084 KB |
Output is correct |
15 |
Correct |
218 ms |
21064 KB |
Output is correct |
16 |
Correct |
218 ms |
21032 KB |
Output is correct |
17 |
Correct |
148 ms |
21052 KB |
Output is correct |
18 |
Correct |
2 ms |
452 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
460 KB |
Output is correct |
3 |
Correct |
2 ms |
452 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
2 ms |
460 KB |
Output is correct |
8 |
Correct |
3 ms |
460 KB |
Output is correct |
9 |
Correct |
2 ms |
460 KB |
Output is correct |
10 |
Correct |
2 ms |
460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
460 KB |
Output is correct |
3 |
Correct |
2 ms |
524 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
2 ms |
460 KB |
Output is correct |
8 |
Correct |
3 ms |
460 KB |
Output is correct |
9 |
Correct |
2 ms |
460 KB |
Output is correct |
10 |
Correct |
2 ms |
460 KB |
Output is correct |
11 |
Correct |
2 ms |
452 KB |
Output is correct |
12 |
Correct |
2 ms |
460 KB |
Output is correct |
13 |
Correct |
2 ms |
540 KB |
Output is correct |
14 |
Correct |
2 ms |
460 KB |
Output is correct |
15 |
Correct |
2 ms |
460 KB |
Output is correct |
16 |
Correct |
2 ms |
460 KB |
Output is correct |
17 |
Correct |
2 ms |
460 KB |
Output is correct |
18 |
Correct |
2 ms |
536 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
2 ms |
460 KB |
Output is correct |
3 |
Correct |
2 ms |
524 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
2 ms |
460 KB |
Output is correct |
8 |
Correct |
3 ms |
460 KB |
Output is correct |
9 |
Correct |
2 ms |
460 KB |
Output is correct |
10 |
Correct |
2 ms |
460 KB |
Output is correct |
11 |
Correct |
18 ms |
2944 KB |
Output is correct |
12 |
Correct |
37 ms |
5256 KB |
Output is correct |
13 |
Correct |
120 ms |
11216 KB |
Output is correct |
14 |
Correct |
179 ms |
21088 KB |
Output is correct |
15 |
Correct |
212 ms |
21136 KB |
Output is correct |
16 |
Correct |
178 ms |
20996 KB |
Output is correct |
17 |
Correct |
157 ms |
21104 KB |
Output is correct |
18 |
Correct |
164 ms |
21160 KB |
Output is correct |
19 |
Correct |
59 ms |
6312 KB |
Output is correct |
20 |
Correct |
160 ms |
14828 KB |
Output is correct |
21 |
Correct |
181 ms |
21084 KB |
Output is correct |
22 |
Correct |
218 ms |
21064 KB |
Output is correct |
23 |
Correct |
218 ms |
21032 KB |
Output is correct |
24 |
Correct |
148 ms |
21052 KB |
Output is correct |
25 |
Correct |
2 ms |
460 KB |
Output is correct |
26 |
Correct |
2 ms |
540 KB |
Output is correct |
27 |
Correct |
2 ms |
460 KB |
Output is correct |
28 |
Correct |
2 ms |
460 KB |
Output is correct |
29 |
Correct |
2 ms |
460 KB |
Output is correct |
30 |
Correct |
2 ms |
460 KB |
Output is correct |
31 |
Correct |
2 ms |
536 KB |
Output is correct |
32 |
Correct |
2 ms |
452 KB |
Output is correct |
33 |
Correct |
57 ms |
7024 KB |
Output is correct |
34 |
Correct |
140 ms |
18008 KB |
Output is correct |
35 |
Correct |
247 ms |
26940 KB |
Output is correct |
36 |
Correct |
241 ms |
24500 KB |
Output is correct |
37 |
Correct |
204 ms |
25020 KB |
Output is correct |
38 |
Correct |
239 ms |
26940 KB |
Output is correct |
39 |
Correct |
166 ms |
23124 KB |
Output is correct |
40 |
Correct |
182 ms |
21528 KB |
Output is correct |
41 |
Correct |
154 ms |
22060 KB |
Output is correct |
42 |
Correct |
151 ms |
22100 KB |
Output is correct |
43 |
Correct |
144 ms |
22180 KB |
Output is correct |
44 |
Correct |
145 ms |
22132 KB |
Output is correct |
45 |
Correct |
240 ms |
26904 KB |
Output is correct |
46 |
Correct |
180 ms |
22388 KB |
Output is correct |
47 |
Correct |
160 ms |
19336 KB |
Output is correct |