oj.uz

Submission #705478

# Submission time Handle Problem Language Result Execution time Memory
705478 2023-03-04T13:06:16 Z pavement Bigger segments (IZhO19_segments) C++17
100 / 100
 364 ms 50264 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
//~ #define int long long
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ppb pop_back
#define eb emplace_back
#define g0(a) get<0>(a)
#define g1(a) get<1>(a)
#define g2(a) get<2>(a)
#define g3(a) get<3>(a)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
using db = double;
using ll = long long;
using ld = long double;
using ii = pair<int, int>;
using iii = tuple<int, int, int>;
using iiii = tuple<int, int, int, int>;
template<class key, class value = null_type, class cmp = less<key> >
using ordered_set = tree<key, value, cmp, rb_tree_tag, tree_order_statistics_node_update>;

int n, a[500005];
ll p[500005];
pair<int, ll> dp[500005];
set<pair<ll, pair<int, ll> > > S;

pair<int, ll> qry(ll p) {
	auto it = S.upper_bound(mp(p, mp(INT_MAX, LLONG_MAX)));
	if (it == S.begin()) return mp(-1, -1ll);
	--it;
	return it->second;
}

void upd(ll p, pair<int, ll> v) {
	if (qry(p) >= v) return;
	auto it = S.lower_bound(mp(p, mp(-1, -1ll)));
	vector<set<pair<ll, pair<int, ll> > >::iterator> to_del;
	while (it != S.end() && it->second <= v) {
		to_del.pb(it);
		++it;
	}
	for (auto it : to_del) S.erase(it);
	S.emplace(p, v);
}

main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		p[i] = a[i] + p[i - 1];
		assert(-(ll)1e16 <= p[i] && p[i] <= (ll)1e16);
		auto tmp = qry(p[i]);
		tmp.second -= p[i];
		dp[i] = max(mp(1, -p[i]), tmp);
		assert(-(ll)1e16 <= p[i] - dp[i].second && p[i] - dp[i].second <= (ll)1e16);
		upd(p[i] - dp[i].second, mp(dp[i].first + 1, p[i]));
	}
	cout << dp[n].first << '\n';
}

Compilation message

segments.cpp:50:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   50 | main() {
      | ^~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 332 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 472 KB Output is correct
34 Correct 2 ms 596 KB Output is correct
35 Correct 2 ms 596 KB Output is correct
36 Correct 2 ms 596 KB Output is correct
37 Correct 2 ms 472 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 3 ms 468 KB Output is correct
40 Correct 2 ms 600 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 2 ms 596 KB Output is correct
43 Correct 1 ms 596 KB Output is correct
44 Correct 2 ms 600 KB Output is correct
45 Correct 1 ms 596 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 472 KB Output is correct
34 Correct 2 ms 596 KB Output is correct
35 Correct 2 ms 596 KB Output is correct
36 Correct 2 ms 596 KB Output is correct
37 Correct 2 ms 472 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 3 ms 468 KB Output is correct
40 Correct 2 ms 600 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 2 ms 596 KB Output is correct
43 Correct 1 ms 596 KB Output is correct
44 Correct 2 ms 600 KB Output is correct
45 Correct 1 ms 596 KB Output is correct
46 Correct 54 ms 9668 KB Output is correct
47 Correct 53 ms 7748 KB Output is correct
48 Correct 42 ms 4304 KB Output is correct
49 Correct 60 ms 7564 KB Output is correct
50 Correct 66 ms 10424 KB Output is correct
51 Correct 63 ms 8940 KB Output is correct
52 Correct 29 ms 4668 KB Output is correct
53 Correct 17 ms 2904 KB Output is correct
54 Correct 53 ms 7756 KB Output is correct
55 Correct 66 ms 9648 KB Output is correct
56 Correct 60 ms 9760 KB Output is correct
57 Correct 58 ms 9380 KB Output is correct
58 Correct 57 ms 9124 KB Output is correct
59 Correct 61 ms 9904 KB Output is correct
60 Correct 61 ms 9864 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 472 KB Output is correct
34 Correct 2 ms 596 KB Output is correct
35 Correct 2 ms 596 KB Output is correct
36 Correct 2 ms 596 KB Output is correct
37 Correct 2 ms 472 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 3 ms 468 KB Output is correct
40 Correct 2 ms 600 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 2 ms 596 KB Output is correct
43 Correct 1 ms 596 KB Output is correct
44 Correct 2 ms 600 KB Output is correct
45 Correct 1 ms 596 KB Output is correct
46 Correct 54 ms 9668 KB Output is correct
47 Correct 53 ms 7748 KB Output is correct
48 Correct 42 ms 4304 KB Output is correct
49 Correct 60 ms 7564 KB Output is correct
50 Correct 66 ms 10424 KB Output is correct
51 Correct 63 ms 8940 KB Output is correct
52 Correct 29 ms 4668 KB Output is correct
53 Correct 17 ms 2904 KB Output is correct
54 Correct 53 ms 7756 KB Output is correct
55 Correct 66 ms 9648 KB Output is correct
56 Correct 60 ms 9760 KB Output is correct
57 Correct 58 ms 9380 KB Output is correct
58 Correct 57 ms 9124 KB Output is correct
59 Correct 61 ms 9904 KB Output is correct
60 Correct 61 ms 9864 KB Output is correct
61 Correct 318 ms 47276 KB Output is correct
62 Correct 319 ms 47172 KB Output is correct
63 Correct 297 ms 39252 KB Output is correct
64 Correct 319 ms 24872 KB Output is correct
65 Correct 361 ms 50264 KB Output is correct
66 Correct 351 ms 43660 KB Output is correct
67 Correct 271 ms 35020 KB Output is correct
68 Correct 126 ms 17588 KB Output is correct
69 Correct 321 ms 37904 KB Output is correct
70 Correct 364 ms 47792 KB Output is correct
71 Correct 348 ms 47308 KB Output is correct
72 Correct 327 ms 41432 KB Output is correct
73 Correct 326 ms 43524 KB Output is correct
74 Correct 350 ms 48524 KB Output is correct
75 Correct 347 ms 48560 KB Output is correct